Hi I have 6 2-week ild sunflower seedlings and they are currently growing their third set of true leaves. So why are my sunflowers drooping? When left untreated, sclerotinia kills sunflowers. They were leggy (too tall and spindly) which is usually from not enough light. Thread starter joediea; Start date Apr 8, 2009; Apr 8, 2009. I have never had sunflower seedlings wilting or curving like that. The disease lives in soil for up to 4 years. Now the lowest leaves died, and the lower levels of leaves have brown spots on them. Knowing how to avoid or remedy these problems can make the difference between success and failure. Water deeply if you need to, but not frequently, especially a few weeks before flowering and after. I hope someone can help me with this! Seedlings leaves turning yellow. The other seedlings didn’t split. Sclerotinia wilt is a common sunflower problem that typically occurs in summer. tomc Super Green Thumb Posts: 2665 … Anna Brown Added: May 12, 2019 Updated: June 5, 2019. Do this less than three weeks after planting or as soon as you see leaves developing. gilla ... until they're fully acclimatised. They shot up really fast, and because FL summers are so hot, they dry out each day and look like the need watering just as often. Plant leaves can tell many things about the health of your plants. Foliage may turn black before it falls from the plant. It can be worrying, then, when problems strike. After the plant becomes more established, it will begin producing differently shaped leaves that … I'm new to gardening so this year I started seeds in the basement. Because the seeds are large, grow quickly and have a long taproot, moving sunflower plants from the sprouting container into the ground can be tricky. And then you force fed already suffering seedlings super-concentrated fertilizer. The general principle is don't fertilize (especially with synthetics) plants that are struggling. I planted a bunch of red sunflower seeds in those biodegradable pots a couple weeks ago. They were doing great until a few days ago when the first leaves began to turn yellow. Share. Attachments IMG_0952.JPG (32.55 KiB) Viewed 10104 times IMG_0951.JPG (33.69 KiB) Viewed 10104 times. The wilt makes the flower heads and leaves wilt. Courgette, marrow, pumpkin and squash problems. Naturally, the leaves of most plants are green because they contain a green-colored pigment … 102 Shares. Sunflower, Helianthus annuus, is an herbaceous annual plant in the family Asteraceae, grown for its seeds.The plant has a thick, hairy, erect stem which gives rise to a large flower head. 9 Causes Why Plant Leaves Turn Yellow. However I noticed that 2 of the seedlings have vertical splits in the stem, I think exposing their ‘insides’, starting from the base of the stem for about 2-3 inches. are cheery flowers that appear in a variety of shapes and sizes to fit in every garden. When I saw the yellowing leaves, I thought they may be getting too much water, so I didn't water them that day. Seedlings are usually floppy and will soon get stronger when hardened off. Any idea what the problem is, and how to correct it? Sunflowers (Helianthus annus) are tall, annual broad-leaved plants that produce large flowers with … Mature plants have heavy drooping heads and need staking, while cut wilting flowers might need a change of water and a bit more care. The upper leaves still look healthy. Leaves turning to a lighter shade of green and yellow and wilting is what happens during the initial stage. Due to this most of us think that the plant is suffering from drought stress and make the … 18 April. When seedlings emerge from the soil, they put forth two starter leaves called cotyledons. It's a place where beautiful isn't enough of a word.... 0. gilla.walmsley Posts: 75.