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Marigolds take the cold pretty well. Lv 7. TtiGeR said:I sowed some marigold seeds a few weeks ago. The plants are fine, it's just the blooms. At later stages buds become shriveled, turn deep brown and dry up. The excess water then builds up in the plant causing small, swollen blisters on marigold leaves and flowers. reynwater. I haven't heard of your kind, but I'm sure they'll be ok as long as you cover them on cold nights. If things still don't get better, may have to just discard the plant. Purplish spots form on leaves and stems. Question From: R. Rastall - Spokane, Washington, United States . To control this disease regular spraying of the crop with Dithane M-45 fungicide @ 0.2% should be followed. 1 decade ago. When you want to add a pop of color to your landscape, marigolds (Tagetes spp.) why is that happening? A 30+ year old question on marigolds. The only exception is the cotyledons. Bacterial Leaf Spot: Small (2-5 mm) circular dead spots form on leaves and petioles. Mine get the purple leaves when it gets cold. Favorite Answer. Set outside to harden or not, results are same. Manage oedema by reducing water in the wintertime and spacing plants further apart to increase air circulation. Hot Network Questions As the blisters age, they harden and form white or brown wart-like bumps and eventually cause the foliage to yellow and drop. The leaves turn yellow and fall prematurely and the plant will weaken and die. None of the cotyledons have any purple spots. Answer Save. On older leaves few deep brown necrotic spots develop. Symptoms are less prominent on mature buds but these buds fail to open. Powdery Mildew: Below is a link to an article in gardeningknowhow on plant deficiencies in tomato and marigold seedlings by Susan Patterson, garden writer and Master Gardener: Plant Deficiencies: Why Are Leaves Turning Reddish Purple In Color Marigold flower partially wilting and leaves are curling. Spraying NEEM OIL is suggested. Our marigold leaves (in India) have been turning white too. Fungicides are available against mildew but you must choose one that is specifically for mildew on marigolds. Marigold Leaves Are Purple And Curling Up. The leaves are purple , and some are curling up .. I planted marigolds (large yellow ones) and they were doing great, but now the blooms are turning brown and dying. Apply fungicide registered for use on this crop. Relevance. 1 Answer. Keep covering them when it goes below 40. Alternaria: Avoid overhead irrigation. Avoid overhead irrigation. Kat Sometimes they pull out of it, sometimes not. They only appeared on the marigold - not other plants. All the seedlings planted in soil and hydroponic setup have evenly distributed purple spots on the leaves from the beginning. Pseudomonas tagetis: Destroy infected plants. We have 90 degree temps and heavy rain showers. I wouldn't worry about the color. Spots have purple margins. Fri May 18, 2012 1:27 am. Generally the mildew that attacks marigolds will not affect other plants. Q. Marigold Blooms Turning Brown. why did my marigolds turn purple? Good luck and enjoy! 1. i started growing some marigolds in the house, but after i planted them outside, they turned a shade or purple. are an ideal choice for the garden. This has happened whenever and whatever garden I've planted either French or African style marigolds: within a day or two the leaves start turning purple, sometimes a lot, sometimes a bit. Even the soil may need to be treated with neem. Would this be the reason? It is a form of fungus. Diseases # 5. Problems With Marigolds. I also sprayed with Sevin due to beetles. Hardy … ... Tomato leaves turning purple. Outside, they turned a shade or purple From the beginning plants are,. To increase air circulation buds but these buds fail to open to control this disease regular of! They pull out of it, sometimes not old question on marigolds weeks ago shriveled, deep! 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