Many of my Beet seedlings are falling over/ very weak stem, and some of them have turned Black by the Base/roots. I pulled one out and it was one single root and Black
The, exact, disease will be dictated by your location and climate, which was not disclosed. Treatment will be disease specific many times. Most of the time, it is one of two genera. Rhizoctonia and Pythium.
Here is an article that will help:
https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/what-is-damping-off.htm
I have had a big problem with pill bugs this year eating small holes in some of my garden items or the skin of my cucumbers. I can my beets and would like to know if I can still use them even though they have these small craters is them??
Yes, it is fine. Just cut away the damage.
I have a tall plastic container to sprout seeds
No. This will need to be done in a very shallow tray. This article will help:
https://www.gardeningknowhow.com/edible/vegetables/lettuce/growing-microgreens.htm
There are white dots on the greens. Is this powdery mildew?
t sounds like your beets have powdery mildew. Here's an article that will help:
https://www.gardeningknowhow.com/edible/vegetables/beets/powdery-mildew-in-beets.htm
It grew higher than 1 1/2 mtrs high, and when cooked, the pot water was bright BLIUE, was this suitable to eat and drink please?
I couldn't find anything about water turning blue, but I did see several references that said the oxalic acid in silverbeet would react with aluminum and iron pans and you should avoid using those to cook with. Apparently it causes a murky water color or can stain the pan. I would not want to eat any of the contents in case it now contained metals.
how to plant beets
Here's all the info you'll need:
https://www.gardeningknowhow.com/edible/vegetables/beets/growing-beets.htm
Hello. Could you please help me with what is eating my beetroot leaves as I can’t find anything on them. Also what can I put on them to stop it without it affecting the beetroot. Many thanks.
It could be cercospera leaf spot. It also looks a bit like leafminer damage. These articles should help you differentiate.
https://www.gardeningknowhow.com/edible/vegetables/beets/cercospora-spot-on-beets.htm
https://extension.unh.edu/blog/beet-spinach-leafminer