Hello, I was wondering if anyone has an explanation for why my tomato plants are super purple and looking a little sick. Can I save the plants, and if so, what are the best steps?
by Curious-Breakfast-20
4 Comments
WildMoonChild84
I had the under side of mine turn purple when they first sprouted indoors and found online that the soil was likely not warm enough. I used a meat thermometer to check, and sure enough, under 65 degrees. Tomatoes like warm soil, above 70 degrees. Have you checked the soil temperature?
Old_Crow_Yukon
Possibly soil that’s too cold, causing phosphorus lockout. If the light is too bright while this is happening the leaves will be more susceptible to scalding and will slowly die. Ask me how I know… Your situation doesn’t seem to be too severe.
In my case I had persistent temps in the 50-60F range. I increased soil temps (measured with a meat thermometer) to 70-80 F during the day while the plants were lit. My basement is so cold I also had to set up tenting to retain some of the heat and boost air temps to get the leaves and roots in sync.
Obladamelanura
Rise temperature
Ineedmorebtc
I dose a little extra phosphorus and the next sets of leaves are green 💯 of the time, every time. I’ve been growing tomatoes for decades.
4 Comments
I had the under side of mine turn purple when they first sprouted indoors and found online that the soil was likely not warm enough. I used a meat thermometer to check, and sure enough, under 65 degrees. Tomatoes like warm soil, above 70 degrees. Have you checked the soil temperature?
Possibly soil that’s too cold, causing phosphorus lockout. If the light is too bright while this is happening the leaves will be more susceptible to scalding and will slowly die. Ask me how I know… Your situation doesn’t seem to be too severe.
In my case I had persistent temps in the 50-60F range. I increased soil temps (measured with a meat thermometer) to 70-80 F during the day while the plants were lit. My basement is so cold I also had to set up tenting to retain some of the heat and boost air temps to get the leaves and roots in sync.
Rise temperature
I dose a little extra phosphorus and the next sets of leaves are green 💯 of the time, every time. I’ve been growing tomatoes for decades.