As the name suggests, these fittonia cultivars have large, showy leaves that look “superb.” The vein patterns are clearly seen and the veins are a crisp white color. I will look under the leaves too just to make sure. This fungus frequently attacks zucchini and other squash, and looks like a sticky white powder on the leaves. Sign up for our newsletter. Treat for these pests with insecticidal soap, a mild, organic-friendly insecticide that is minimally toxic to beneficial insects. It is a common problem for plants from the Cucurbitaceae family. Keep up to date with all that's happening in and around the garden. Some of my squash and pumpkin plants, which have been in the garden since the first week of May, have started getting white veins in the leaves (picture). Many varieties of courgette and marrow have this appearance and it is perfectly normal and nothing to worry about as it is Thank you. They were all from the same seed stock, but are at different stages of growth. The best way to manage squash bugs is to head to the garden every day and inspect the top and bottom of your zucchini leaves for clusters of bronze-colored, football-shaped eggs. Powdery mildew looks like a white, dusty mold that is growing on your zucchini squash leaves. There are many varieties that have a recessive trait for white veins, but there are also some conditions that may cause this as well. Sign up to get all the latest gardening tips. Log in or sign up to help answer this question. If it seems healthy, then it could likely be a trait of the plant. Some of the leaves are fine, but there are several that have the white lines. atascosa_tx Cool Member Posts: 96 Joined: Sun Mar 02, 2008 10:19 pm Location: Atascosa. (The beige coloring on the border was addressed in an earlier question to Ask an Expert, where the expert said it was probably nutritional deficiency because I started them inside). Silvery Spots on Zucchini Leaves. if it's little veins in the leaves, don't worry.. This problem isn’t on all my zucchini plants, and they are flowering and apart from the white colours look relatively healthy. There are varieties of zucchini that are resistant to powdery mildew, including: Desert. If it seems healthy, then it could likely be a trait of the plant. https://extension.umd.edu/growit/vegetable-profiles-summer-squash, https://www.extension.umn.edu/garden/diagnose/plant/vegetable/cucumber/leavesspots.html. Then sprayed each infected leaf each morning until the spots when away. If you don't have an account sign up for an account now. Feed your soil and your soil will feed you. The pink vein patterns are so dense that the leaves look pure pink with green edging. My zucchini plants got powdery mildew this year and I got rid of the mildew! The honeydew left behind by aphids can lead to sooty mold , and can also attract ants. There are many varieties that have a recessive trait for white veins, but there are also some conditions that may cause this as well. One, is a nutrient deficiency. Check out the great photos at the two links below. My young zucchini plants are getting white veins. Another common cause of white or pale spots on zucchini leaves … Powdery mildew requires a live host to spread. It grows by reproducing spores, which are the white powdery substance that is … Zucchini plants impacted by aphids may be stunted or have curling, yellowing, mottled, or dry leaves. I'm nervous about powdery mildew so I've made certain these plants are in full sun areas with lots of airflow. I would watch it closely for any more symptoms. Thanks. You may also bring a sample by the office in La Plata. As the season progresses, you can monitor your plants for some of the common diseases like downy mildew and powdery mildew. I have the same. The virus, known as Tomato Leaf Curl New Delhi Virus (ToLCNDV), has been identified on courgette leaves in one plot in Occitanie and three in Provence-Alpes-Côte d’Azur. Ambassador. Squash bugs are resistant to most pesticides, but very young nymphs can be controlled with applications of … Their feeding leaves behind scars in the form of pale discoloration on your leaves. I am including an article on plant diseases but none of them sound like what you are experiencing. Check out the great photos at the two links below. A White or sometimes almost silvery smooth-surfaced patches of discolouration on perfectly good, healthy and green leaves often cause unnecessary concern. Produced by several species of fungus, the infection spreads quickly over large distances. There is something different about our zucchini leaves. If rubbed, the powder smears, making it easy to distinguish from normal silvering. A Newly Planted Zucchini Is Turning Yellow. I'm including three pictures of my tatume zucchini plants. Ask an Expert is made up of groups and individual experts. Some varieties in the squash family (squash, cucumber, watermelon, etc) have a natural whiteness around the leaf veins. Good Morning,This looks like normal coloration. As usual, I searched for answers and found out a couple possible causes. A virus that attacks melons, cucumbers and courgettes has been identified in the south of France, the ministry for agriculture announced yesterday (October 21). Mosaic Virus. Some of them have a pronounced white look to their veins while others are solid green. A fast grower, zucchini (Curcurbita pepo) plants can quickly overtake a garden with their broad leaves, vines and fruit. The problem I am worried about is the whitening along the veins of the leaves. Zucchini has a reputation for being an overly-productive crop in the height of the summer, difficult to kill and even more difficult to utilize to its fullest. 9 Replies 4464 Views June 15, 2010, 18:54 by jamima white mould on courgette leaves As directed by my mother, I combined a tsp of baking soda with a quart of water in a spray bottle; shook it up real good so all the soda dissolved. Under/Over watering? Because they’re so small, you may not notice them until you have a large infestation, or you see signs of damage on your plants. The fungus first appears as small white patches on the leaves, and then spreads to the undersides of the leaves to the stem and sometimes to the flowers. https://www.gardeningknowhow.com/edible/vegetables/zucchini/zucchini-squash-diseases.htm. 7 Replies 10429 Views June 14, 2008, 10:06 by flora : white spots on courgette leaves Started by needssomehelp on Grow Your Own. What is causing the white veins, and what if anything needs to be done about it?