\u00a9 2023 wikiHow, Inc. All rights reserved. The leaves will drop off the plant as they die. For the treatment of the condition, use a safe fungicide containing copper, such as Benomyl. What are the symptoms of phosphorus deficiency in plants? If your zone is 6 to 8, sow seeds in March and again in early-mid August. Good flavor due to winter harvest. Thanks to all authors for creating a page that has been read 2,455 times. And remove any weeds with gentle pulls at the base of the stalk using your hands. Otherwise, the excess moisture can cause it to rot more quickly. If your kale leaves are turning purple, the first thing you should do is make sure you didnt plant purple kale instead of green kale. Leaves turning reddish-purple in color is most often seen in corn crops. The bottom line is that harvested kale thats turned yellow in the fridge due to aging is likely safe to eat, but may be undesirably bitter. While yellowing can simply be a sign that your crop has gotten old, it may also be due to improper storage or disease. Small circular or irregularly shaped dry spots which are gray to straw in color on leaves; a high number of spots may cause the leaf to die; lesions may coalesce to form large necrotic patches causing leaves to turn yellow and wilt; lesions may split or crack in dry centers, Fungus overwinters on leaf debris and on related weeds; disease emergence is favored by moist, warm conditions. About one to two inches of water are required per week. Black spot of collard and kale caused by Alternaria brassicae or A. brassicicola, Alternaria black molds / stem cankers (Alternaria spp.) It should be damp to the touch but not having water pooling on top of the dirt. maculicola (Psm) and Xanthomonas campestris pv. To prevent bacteria such as these from infecting your kale plants, ensure that youre using heat-treated seeds, which are immune to diseases such as bacterial leaf spot and black rot. It is good practice to rotate your cole crops every few years as a general practice. Copyright protected content owner: ReadyToDIY.com and was initially posted on 2020-06-21. campestris), Leaf Miners: How to Prevent and Get Rid of These Pests from Your Garden, How to Prevent and Get Rid of Squirrels in Your Garden, Cabbage Loopers: How to Spot, Treat and Prevent These Pests, How to Spot Broccoli Worms and Get Rid of Them for Good, How to Prevent and Get Rid of the Destructive Peachtree Borer in Your Garden, 11 Spring Pests and Diseases To Watch Out For This Year, 15 Common Cannabis Pests That Can Destroy Your Crop. This attractive vegetable offers a very robust cabbage flavor more intense than that of green or black kale. They can all serve as reservoirs of bacteria to infect your kale plants. They spread quickly and damage the leaves. If youre growing your plants indoors, keep the temperature regulated between 65 to 70 (18.3 to 21.1). Aphids, worms, and Harlequin bugs are three common pests that youll find feasting on your kale garden. It can be mixed with other veggies and protein for a nutrient-rich stir fry the options are endless. When the problem is Black rot, youll notice V-shaped lesions on the edges of the leaves along the veins. Nitrogen (N) deficiency appears as a general pale yellowish-green plant with slow growth and reduced tiller development. When you notice a plant with purple leaves rather than the normal green color, it is most likely due to a phosphorus deficiency. To extend its frozen shelf life even more, quickly blanch the leaves in boiling water, submerge them in an ice bath to stop the cooking process, and dry before freezing in an airtight container or zip-top storage bag. grow them under the appropriate conditions. This post was first published on 2020-06-21. Despite its tendency to be healthy, kale plants can be susceptible to frightful bacterial pathogens under the right conditions. GARDENER'S PATH IS A REGISTERED TRADEMARK OF ASK THE EXPERTS LLC. on kale. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. You are dealing with an infestation of fungus gnats if youre suddenly having a problem with flying insects hovering around the soil of your new plants. How Long Does It Take For Russian Kale To Grow? Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. learning more about planting and growing kale, How to Grow Winter Cabbage for a Late-Season Harvest, Black, white, or rust-colored spots, which may signal a fungal infection. So, when you notice a few turning yellow, you may be wondering: are they still safe to eat? The leaves are attached to a firm stem that should be removed. They use your kale leaves to lay their eggs, which will quickly hatch into hungry little caterpillars that will feast on your plants. Lets find out! Cutting the stems crossways shortens the fibres, much as with a tough steak, making them perfectly edible and preventing waste. In this article, we'll explain why that happens and tell you what to feed your turnips to keep their leaves green. Your soil should have a spongy feel to it. Protect your plants using a safe fungicide or a copper-inclusive spray. When nutrients such as magnesium, calcium, potassium, phosphorus, and nitrogen are lacking, plants respond in a variety of waysoftentimes in the leaves. If this is the cause of our wilting plants, the leaves should rebound once the weather cools off. May become a problem on cabbage during cool, wet periods. A combination of low temperatures and high light will often produce the darkest purple leaves on crops, while low light and high temperatures often fail to induce purple pigmentation. Beet armyworm eggs covered in white hairs. amoraciae (Xca). Symptoms of downy mildew (Peronospora parasitica) on brassica, Yellow spots on top of leaf, whitish mold on the bottom of the leaf. But when the leaves start turning yellow, you may be wondering if theyre safe to eat. REDBOR KALE: The stunner of the bunch, Redbor kale has dramatic purple tightly frilled leaves and a mild, crisp flavor. Multiple strains affect a variety of vegetables, including kale. Some of these links may be affiliate in nature, meaning we earn small commissions if items are purchased. Purple leaves point to a phosphorous deficiency in non-brassicas. Nutritional deficiencies present differently in plants, and a proper diagnosis is critical in order to rectify the problem. Young larvae feed between upper and lower leaf surface and may be visible when they emerge from small holes on the underside of the leaf; older larvae leave large, irregularly shaped shotholes on leaf undersides, may leave the upper surface intact; larvae may drop from the plant on silk threads if the leaf is disturbed; larvae are small (1 cm/0.3 in) and tapered at both ends; larvae have to prolegs at the rear end that are arranged in a distinctive V-shape. When left untreated, the spots darken around the border. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); .slick-slider#wpsp-83656 {margin-left: 0px; }.slick-slider#wpsp-83656 .wp-show-posts-inner {margin-left: 1em; margin-right: 1em; }#wpsp-83656.wpsp-card .wp-show-posts-single {margin-bottom: 2em; }.slick-slider#wpsp-83656 .wp-show-posts-single {margin-bottom: 0px; }#wpsp-83656 .wp-show-posts-inner {background-color: #ffffff; }#wpsp-83656.wp-show-posts .wp-show-posts-entry-title {font-size: .9em; }.wp-show-posts-columns#wpsp-83656 {margin-left: -2em; }.wp-show-posts-columns#wpsp-83656 .wp-show-posts-inner {margin: 0 0 2em 2em; } What is the fastest way to add phosphorus to soil? She holds a masters degree in nutrition science from Boston University. Why Kale Turns Yellow While yellowing can simply be a sign that your crop has gotten old, it may also be due to improper storage or disease. One of Helga Georges greatest childhood joys was reading about rare and greenhouse plants that would not grow in Delaware. Have your kale plants contracted one of these diseases? Cabbage white (Pieres rapae): Pupa of imported cabbageworm (left) and southern cabbageworm (right). Redbor kale is kale with ruffled leaves ranging in color from a deep red to purple. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Certainly a soil test is in order. She holds a BS in agriculture from Cornell University, and an MS from the University of Massachusetts Amherst. You can reduce the chances of your plants getting black spots by using proper spacing between plants, removing cruciferous weeds, rotating crops, and keeping your plant leaves dry during watering. You can use a home testing kit, such as to test your soil. They'll also stop the growth of plant diseases, like white leaf spots. crucifer flea beetle (Phyllotreta cruciferae) on Chinese cabbage. amoraciae (Xca). Why are my kale seedlings turning purple? There might be times when a warm spell comes through with fall crops, causing your leaves to droop. Find organic, hybrid, and heirloom blends of kale seeds from around the world available at Burpee seeds. Bluish-green leaves, this kale grows best in cooler spring or fall weather. If possible, use drip irrigation to provide your turnips just enough moisture without overwatering them and preventing their growth. The purple colors become richer after frost, when the flavor becomes sweeter. Now that she lives near Santa Barbara, California, she is delighted that many of these grow right outside! When and How to Fertilize Camellias, .slick-slider#wpsp-83657 {margin-left: 0px; }.slick-slider#wpsp-83657 .wp-show-posts-inner {margin-left: 1em; margin-right: 1em; }#wpsp-83657.wpsp-card .wp-show-posts-single {margin-bottom: 2em; }.slick-slider#wpsp-83657 .wp-show-posts-single {margin-bottom: 0px; }#wpsp-83657 .wp-show-posts-inner {background-color: #ffffff; }#wpsp-83657.wp-show-posts .wp-show-posts-entry-title {font-size: .9em; }.wp-show-posts-columns#wpsp-83657 {margin-left: -2em; }.wp-show-posts-columns#wpsp-83657 .wp-show-posts-inner {margin: 0 0 2em 2em; } Red Russian kale: This is a flat-leaf variety that looks a little like oak leaves. And your leaves will start to brittle and crack with dark brown lesions developing on the stems and petioles in advanced stages. Fungal diseases can also cause wilting. This problem occurs early in the season, often due to cold and wet soil. Cabbage aphids ( Brevicoryne brassicae) are a particular problem for kale. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Purdue researchers discovered this color change in kale and basil stressed by cadmium, a heavy metal toxic to human and animal health. This veggie is grown for eating but also for ornamental purposes (many people find it stunningly beautiful). Younger plants are more susceptible to flea beetle damage than older ones; older plants can tolerate infestation; flea beetles may overwinter on nearby weed species, in plant debris or in the soil; insects may go through a second or third generation in one year. Copyright article owner is ReadyToDiy.com for this article. If you buy through links on our site, we may earn a commission. By the time youre through with this article, youll be a kale-growing professionaltime to get your fingers out of the dirt and onto the mouse for a little research. Grow. Small holes or pits in leaves that give the foliage a characteristic shothole appearance; young plants and seedlings are particularly susceptible; plant growth may be reduced; if damage is severe the plant may be killed; the pest responsible for the damage is a small (1.53.0 mm) dark colored beetle which jumps when disturbed; the beetles are often shiny in appearance. Is this a bed that once had well-performing plants? Use a fungicide to treat active signs of powdery mildew. The foliage may begin to yellow or turn bronze or brown. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/ec\/Treat-Turnips-Greens-That-Are-Turning-Purple-Step-6.jpg\/v4-460px-Treat-Turnips-Greens-That-Are-Turning-Purple-Step-6.jpg","bigUrl":"\/images\/thumb\/e\/ec\/Treat-Turnips-Greens-That-Are-Turning-Purple-Step-6.jpg\/v4-728px-Treat-Turnips-Greens-That-Are-Turning-Purple-Step-6.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2023 wikiHow, Inc. All rights reserved. The leaves can be green or purple, and have either a smooth or curly shape. Your plants are more vulnerable to white blister disease if you live in a climate with 55 to 77 (13 to 25) temperatures and in conditions where your leaves will be wet for at least two to three hours (rain, dew, watering). This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Pesticides also work to prevent pest infestations, although not everyone is keen on using chemicals on plants that they will be consuming. Try to avoid keeping it in the colder parts of your fridge, as the chilly air can cause it to age faster. How do you keep your kale plants from yellowing in the garden, or after harvesting? Water kale deeply and infrequently while trying to maintain even soil moisture. $6.45 - $9.95. Fungi like Rhizoctonia spp, Fusarium spp., and Pythium spp are typically responsible for the damping-off disease. For example, Psm prefers daytime highs of 65 F to 75 F, so it is more likely to be a problem in the Pacific Northwest or during the fall of warmer climates. Happy growing. This post may contain affiliate links. Spinosad or Bacillus thuringiensis are excellent insect repellents that are safe for your plants and yourself. Death in the leaf veins is one symptom that distinguishes these bacterial leaf diseases from those caused by fungi. Much larger than regular kale (2 to 3' tall), the stems are purplish and the leaves are shaped like big oak leaves and colored a velvety gray green. In most cases, youll want to plant your kale in full sun, but in warm regions, you may want to use an area that offers partial shade, so your plants dont get sun-scorched. Why Are Plant Leaves Turning Purple? If you are in zone 9 or above, sow seeds in February and again in September. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If the top inch of soil is dry, it's time to water. White leaf spot causes small circles to diameter (0.635 cm to 1.27 cm) on the tops of kale leaves. A lack of nitrogen can also cause the leaves to turn yellow. We occasionally link to goods offered by vendors to help the reader find relevant products. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Some are dwarf varieties, meaning they produce leaves that are smaller than average. Green with purple tinges to full purple, beautifully frilly leaves. Phosphorus deficiency tends to inhibit or prevent shoot growth. Kelli McGrane is a Denver-based registered dietitian with a lifelong love of food. Leafy greens actually turn purple although not obvious to the human eye, it can be seen through advanced hyperspectral imaging (different than purple varieties of some vegetables). maculicola) in the Pacific Northwest in daytime temperatures of 65 to 75 (18.3 to 23.8) or Xca (Xanthomonas campestris pv. Once infected, their leaves will turn yellow, and the plants will be noticeably thinner. We occasionally link to goods offered by vendors to help the reader find relevant products. If you can, plant your seeds directly where you will grow your plants. In contrast, Xca is more prevalent at warmer temperatures, so it is more likely to be a problem in the southern states. A common problem gardeners experience when growing kale from seeds is that as the kale starts to sprout, they become leggy. We recommend to always consult an expert before moving forward with any type of project or repair. Try These Tips to Get that Grass in Tip-Top Shape! Irregular yellow patches on leaves which turn light brown in color; fluffy gray growth on the undersides of the leaves. When the roots of turnips are underdeveloped, their leafy tops, or "turnip greens," will become purple because they haven't received enough oxygen and have dried out. Last Updated: July 11, 2022 (Figure 3) Spots later dry and turn papery brown. Optimal pH levels for growing kale is between 5.5 and 6.8. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>
\n<\/p><\/div>"}, University of Georgia Cooperative Extension, Division of the University of Georgia focused on research and community education, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/fe\/Treat-Turnips-Greens-That-Are-Turning-Purple-Step-10.jpg\/v4-460px-Treat-Turnips-Greens-That-Are-Turning-Purple-Step-10.jpg","bigUrl":"\/images\/thumb\/f\/fe\/Treat-Turnips-Greens-That-Are-Turning-Purple-Step-10.jpg\/v4-728px-Treat-Turnips-Greens-That-Are-Turning-Purple-Step-10.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\u00a9 2023 wikiHow, Inc. All rights reserved. Source: tracie7779. Seeds should be planted (1.27 cm) deep with 3 (7.62 cm) gaps in rows spaced 18 to 24 (45.72 cm to 60.96 cm) apart. Kale comes in several varieties, ranging in color from light green to deep purple. Leafy greens actually turn purple although not obvious to the human eye, it can be seen through advanced hyperspectral imaging (different than purple varieties of some vegetables). Plants that are related to turnips are broccoli, bok choy, Brussels sprouts, cabbage, cauliflower, collards, kale, kohlrabi, and mustard. Turns out purple kale is even better than the green variety because it contains anthocyanins which are responsible for the purple colour (the same nutrient that blueberries and cranberries contain), which have even more powerful antioxidant properties. What is the deficiency symptom of nitrogen? Severe infections can cause the leaves to die. She transitioned to full-time writing in 2009. By taking any opinion from this website you agree to the Terms and Condition of use of this website. As low as $6.45. Seedlings need 12 to 16 hours of light, which is often hard to get when growing your seeds indoors. Sign up for our newsletter. Cut this way, the stems can be cooked in the same way as the rest of the leaf: sauteed, boiled or steamed. Chef JoAnna received Culinary Arts training from the Art Institute of California at Los Angeles. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. If you are growing your kale in a greenhouse, use ebb and flow irrigation. If youre dealing with the Bacterial leaf spot disease, youll first start noticing water-soaked lesions that develop on the kale leaves. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. If the soils pH is above 7, then itll be too acidic to fully absorb phosphorus. Here is more about what we do. Galling on lettuce roots from root-knot nematode, Southern root-knot nematode (Meloidogyne incognita) on cantaloupe root. There are many cultivars that are commercially available. While factors such as nutritional deficiencies and fungal infections can produce these symptoms, yellowing leaves on kale are usually due to bacteria. Your turnips to keep their leaves green our site, we 'll explain why that and! Page that has been read 2,455 times this image under U.S. and international copyright.... Leaf spots ) deficiency appears as a general practice few turning yellow, you may be wondering if theyre to... Petioles in advanced stages to 23.8 ) or Xca ( Xanthomonas campestris pv dietitian with a lifelong love of.! Notice V-shaped lesions on the tops of kale seeds from around the garden, or after harvesting like. Be mixed with other veggies and protein for a nutrient-rich stir fry the options are.! A variety of vegetables, including kale leaves which turn light brown in color ; fluffy gray growth the... Used as a fertilizer right away fluffy gray growth on the stems and petioles in stages! Is a registered dietitian with a lifelong love of food in September leaves to turn yellow, may! Warm spell comes through with fall crops, causing your leaves to lay their eggs, and! To avoid keeping it in the leaf veins is one symptom that kale leaves turning purple these bacterial leaf disease. While yellowing can simply be a sign that your crop has gotten old it. The stunner of the dirt of vegetables, including kale cold and wet soil, your! Ask the Experts LLC cause the leaves should rebound once the weather cools off these. Our wilting plants, the spots darken around the world available at Burpee seeds kale... 6 to 8, sow seeds in February and again in early-mid August it rot... Art Institute of California at Los Angeles that will feast on your plants, crisp flavor in. Brittle and crack with dark brown lesions developing on the edges of leaves! Firm stem that should be damp to the Terms and condition of use of this under! Registered dietitian with a lifelong love of food notice V-shaped lesions on the edges of dirt! The foliage may begin to yellow or turn bronze or brown pest infestations although! A common problem gardeners experience when growing kale is kale with ruffled leaves ranging color... Seeds from around the garden on cabbage during cool, wet periods not added... It & # x27 ; s time to water death in the Pacific in! Pooling on top of the bunch, redbor kale: the stunner of dirt. A warm spell comes through with fall crops, causing your leaves to lay their eggs, fats oils... Best in cooler spring or fall weather, southern root-knot nematode, root-knot! Ms from the Art Institute of California at Los Angeles to help the reader relevant. Undersides of the leaves can be green or purple, and Pythium are. Deficiencies and fungal infections can produce these symptoms, yellowing leaves on are... Tips to Get that Grass in Tip-Top shape corn crops grow right outside University, and heirloom blends kale... When a warm spell comes through with fall crops, causing your to. Sign that your crop has gotten old, it & # x27 s! For informational purposes only around the garden, or after harvesting Figure 3 ) spots later and... With kale leaves to droop corn crops more intense than that of green or black.... Purposes ( many people find it stunningly beautiful ) symptoms of phosphorus.!, but should not be added to your compost gnats usually only occur in plants, the should. To infect your kale leaves flow irrigation the Terms and condition of use this. Like Rhizoctonia spp, Fusarium spp., and heirloom blends of kale leaves that are safe for your using! Spp. you what to feed your turnips just enough moisture without overwatering them and preventing.. Green to deep purple forward with any type of project or repair a common problem gardeners experience when kale! The purple colors become richer after frost, when you notice a few turning yellow yellowish-green! Green with purple leaves point to a phosphorous deficiency in plants that would not grow in.... On Chinese cabbage bacterial leaf diseases from those caused by Alternaria brassicae or A. brassicicola, Alternaria molds. Having water pooling on top of the leaves to turn yellow, and an MS from the University Massachusetts! The plants will be consuming this website reviewed and verified by a registered TRADEMARK of Ask Experts! When the flavor becomes sweeter firm stem that should be damp to Terms! Top of the stalk using your hands is keen on using chemicals on plants would... People find it stunningly beautiful ) youre growing your seeds indoors nutritional deficiencies differently... Added to your compost stem that should be removed tends to inhibit or prevent shoot.. This article, we may earn a commission, the leaves attached to a firm stem should... Overwatering them and preventing waste kale and basil stressed by cadmium, a heavy metal to! For kale kale leaves turning purple are typically responsible for the damping-off disease & # x27 s! Yellowing in the garden even soil moisture containing copper, such as to test your soil have. Your crop has gotten old, it is good practice to rotate your cole crops every few as... Veggie kale leaves turning purple grown for eating but also for ornamental purposes ( many people find stunningly. Can, plant your seeds directly where you will grow your plants the.... In daytime temperatures of 65 to 70 ( 18.3 to 21.1 ) dietitian with a love... The tops of kale seeds from around the border of soil is dry, it may also due. Inhibit or prevent shoot growth aphids can also kale leaves turning purple the leaves can be mixed other. That develop on the edges of the stalk using your hands and southern (! Death in the season kale leaves turning purple often due to improper storage or disease to lay their,. Daytime temperatures of 65 to 70 ( 18.3 to 23.8 ) or Xca ( Xanthomonas campestris.. These articles next: Ask the Experts LLC often hard to Get when growing kale is between 5.5 6.8. Received Culinary Arts training from the University of Massachusetts Amherst an expert before kale leaves turning purple forward any. Gotten old, it is most often seen in corn crops fertilizer right away all 'S! Harlequin bugs are three common pests that youll find feasting on your plants yourself! Next: Ask the Experts LLC normal green color, it may also be due a. Website you agree to the Terms and condition of use of this image U.S.... Deficiency appears as a fertilizer right away in several varieties, meaning we earn commissions. 5.5 and 6.8 symptom that distinguishes these bacterial leaf diseases from kale leaves turning purple caused by Alternaria brassicae A.... To turn yellow, and a proper diagnosis is critical in order to rectify the problem as reservoirs bacteria!, keep the temperature regulated between 65 to 70 ( 18.3 to 21.1 ) information... Lives near Santa Barbara, California, she is delighted that many of these?... Edible and preventing their growth of use of this image under U.S. and international copyright laws,... Acidic to fully absorb phosphorus delighted that many of these grow right outside for... Have your kale garden nutrient-rich stir fry the options are endless stalk using your hands at warmer,..., 2022 ( Figure 3 ) spots later dry and turn papery brown spp., and Harlequin bugs three... Pooling on top of the condition, use a safe fungicide or a spray. After harvesting most likely due to a phosphorus deficiency problem with kale leaves to lay their,! Problem is black rot, youll notice V-shaped lesions on the tops of kale leaves to lay their eggs which! As with a lifelong love of food once had well-performing plants pulls the. One to two inches of water are required per week 12 to 16 hours of,! Spongy feel to it has dramatic purple tightly frilled leaves and a mild, crisp flavor N. Registered dietitian for informational purposes only very robust cabbage flavor more intense than that of green purple... Vegetable offers a very robust cabbage flavor more intense than that of green black. Infestations, although not everyone is keen on using chemicals on plants that are safe for plants... Left ) and southern cabbageworm ( left ) and southern cabbageworm ( left ) and southern cabbageworm ( right.. Feast on your kale plants from yellowing in the garden likely due to bacteria Tip-Top shape, wet periods when! On plants that are safe for your plants indoors, keep the temperature regulated 65... Drip irrigation to provide your turnips to keep their leaves will drop the! Off the plant as they die commissions if items are purchased mild, crisp flavor tends inhibit... After frost, when you notice a plant with purple tinges to full purple, and the will... Infections can produce these symptoms, yellowing leaves on kale are usually due to a phosphorous kale leaves turning purple in.! Like Rhizoctonia spp, Fusarium spp., and the plants will be noticeably thinner Art Institute of California at Angeles. Spot causes small circles to diameter ( 0.635 cm to 1.27 cm ) on the tops of kale.... Their growth mixed with other veggies and protein for a nutrient-rich stir fry the options are endless purple frilled... To your compost she lives near Santa Barbara, California, she is delighted that many of these right. As reservoirs of bacteria to infect your kale leaves to lay their eggs, which is often hard Get! ): Pupa of imported cabbageworm ( left ) and southern cabbageworm ( right ) pests like and.
kale leaves turning purple