I planted cabbage by accident. Now I have 9 heads about 3-4 inches in diameter. We're expecting 2 hours around 30 degrees tonight and several hours down to 25 tomorrow. Can they take it or should I pick them now?
Cabbage is very cold hardy, surviving temps as low as 15-20 F. However, if you are worried about your plants or if temps fall below this, you could always add additional protection with cold frames/tunnels and mulching.
I got lazy last fall and just now got out to clear my raised bed for this year's plants. I noticed that several of the stalks/stems from last year's cabbage are sprouting and looking like they are already forming heads. Is this a fluke?. Will they continue to form? One stalk looks like it has 4 heads on it already! We had a really mild winter here in Indiana. They aren't taking up much space, so I guess I'll just leave them but I was wondering if this is normal.
They will form new leaves and they may get into a head like shape (where the leaves fold in over each other), but these offshoots will not form true heads. The leaves never grow tight enough to form the type of head you would get from a fresh plant. But, they are edible, so if you harvest them, you can use them like you would cabbage.
I bought cabbage plants from a nursery planted in a backyard garden in late November/early December, and they still have not produced a head. They just keep growing big leaves. Also, can I use the big leaves to eat and cook with?
This article will help with producing heads: https://www.gardeningknowhow.com/edible/vegetables/cabbage/cabbage-head-formation.htm
Yes, the leaves are edible.
I am having a problem with root maggots in my garden. They have all but destroyed my cabbage and brussels sprouts. They also have infested my onions. I cut a small potato in half, and skewered each half on a stick. I then buried the potato halves in different parts of my garden. After 3 days, I pulled the potato halves up and examined them. I found one root maggot on one half and 3 root maggots on the other. The potato halves were buried too deep for a fly to lay eggs. Unless the potatoes carried fly eggs, the maggots must have hatched from eggs in my soil. Did I till-in fly eggs that overwintered near the surface? Did the fly eggs come with the composted horse manure that I tilled into my soil?
Yes, the eggs likely overewintered in the soil. Here is more information that should help with their control: https://www.gardeningknowhow.com/plant-problems/pests/insects/root-maggots.htm
https://www.gardeningknowhow.com/plant-problems/pests/root-eating-insects-identifying-vegetable-root-maggots-and-root-maggot-control.htm
I planted purple cabbage in Dec. in my garden in San Jose, CA. The plant looks very healthy with huge leaves. It is trying to produce head but I see no head formation. Can it be due to the very warm weather?
Yes, warm weather can cause problems with heads forming. You can try shading the plant some or mulching the roots and extra water may help as well.
This article may be helpful:
https://www.gardeningknowhow.com/edible/vegetables/cabbage/cabbage-head-formation.htm
My cabbage plants are gorgeous, but not forming heads. I planted them late in the season last year and they lived through frost and even a snow over the winter. They have lovely big leaves, but two of them went to seed without forming a head; I cut that off, and now they are making baby cabbages at the roots of the leaves. The other two are attempting to form heads, but the leaves do not close except at the very center, so the head is still very small and a bit loose. I hate to lose these beautiful leaves. Can I save the plants, and can we eat the leaves if they have not formed a head? It is in the 70's and 80's here now.
They need to be kept cool to form a head. This article will help: https://www.gardeningknowhow.com/edible/vegetables/cabbage/cabbage-head-formation.htm
And yes, you can eat the leaves.
What is the best way to deal with caterpillars on cabbages?
Hi Malcolm. Here are a couple of links to articles on the subject that you should find most helpful. Please check them out and feel free to ask questions.