I want to grow red and yellow capsicum. What is the production capacity per plant (i. e. how much would I expect to harvest per plant over the season), and how long does the season last?
There is no solid answer. It depends on many factors such as your planting zone, light exposure, moisture, condition of your soil, how many other pepper plants you plant, access to pollinators, fertilizing and plant quality.
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/edible/vegetables/pepper/growing-chili-pepper-plants.htm
https://www.gardeningknowhow.com/edible/vegetables/pepper/growing-peppers.htm
When and what should I feed my pepper plants?
This article will help: https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-fertilizer.htm
We are growing pepper plants and tomato plants on our deck. One of the pepper plants have small holes from an insect. What treatment is necessary, and is there a household cure?
It may be flea beetles. This article will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/what-are-flea-beetles.htm
I have small plants and leaves have brown on edges, about 1/2 of our population is like this. Have gone to a new garden spot that has been idle for several years. The garden is on a hill and draining.
They need more water. The hill is probably taking the water away faster than it would in flat ground. Increase water by a bit and you should be fine.
I have several varieties of pepper plants and about three fourths of the plants have curling leaves.
As with tomato plants, peppers can also suffer from a virus known as leaf curl. This may be what your pepper plants are experiencing, though it could also be attributed to a lack of water or restricted root growth. The following article should help: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-leaves-curling.htm
I have leaves that curl and seem a little brittle on some tomato and pepper plants in my garden, but not on all of them. One plant is over 60 inches high (in Iowa) and has tomatoes developing, so it doesn't seem to affect the growth. These are early variety, the other ones are a Roma type, and are not affected. Also have it on some pepper plants, which are all the same variety. I sprayed, thinking they might have aphids. I have excellent drainage, but the weather has been wetter than normal.
Tomatoes and peppers are generally affected by the same things. With this in mind, the following article may offer some possible reasons for your curling plant leaves: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-leaves-curling.htm
My capsicum grow to full size and as they are about to change color, they blister about the size of a 50 cent piece and then the whole fruit turns to mush. This has happened in summer and winter in Townsville.
It sounds like it may be a blossom rot issue. This article will help you:
https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-blossom-end-rot.htm