Would like to know the soil and sun requirements, as well as fertilizer to use, and what size area do I need?
This article should help: https://www.gardeningknowhow.com/edible/vegetables/beans/tips-for-growing-beans.htm
I've got powdery mildew on my runner bean plants. How do I get rid of it?
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm
https://www.gardeningknowhow.com/problems/get-the-cure-for-powdery-mildew.htm
You can also use neem oil on powdery mildew. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
What length pole should be used for a scarlet runner?
They can reach heights of about 8 feet tall. You don't need to make a pole this tall, though. If you make a shorter pole, it will simply grow to the top and then over.
I have otherwise healthy runner beans, but have a massive infestation of black fly. I've sprayed with garlic infused soapy water, shop bought stuff (which, I'm not keen on), and even planted marigolds to attract lady birds, but the ants scared them off! HELP!!
The following article should be of some help to you: https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm
I grew White Lady Runner beans in my greenhouse last year (much too windy to grow outside up here in the N. W. ). The flowers refused to set initially in the earlier part of the season, but later I achieved a fantastic crop. This year I have 'loads of flowers' but there is no sign of setting. Help.
This article should help: https://www.gardeningknowhow.com/edible/vegetables/beans/bean-blossoms-no-pods.htm
What are the tiny, round, brown globules on the roots?
These are nitrogen fixing nodules. They are perfectly normal and very beneficial for your garden. This article has more information on these: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/nitrogen-nodules-and-nitrogen-fixing-plants.htm
I have just acquired a property with a large rear garden, which was terribly overgrown and neglected so I have cut all the growth back and dug an area south to north, 35 ft. sq. I had to dig and rake this area four times to get it all nice, and to a two-fork depth. Really hard work. Now it's the beginning of September, and I want to grow vegetables, maybe for next year or is it too late for this year. I like runner beans, broad beans, cabbage, onions, leeks, potatoes and sprouts. Now that the patch has all been dug, what should I do next? I have not treated the soil with anything yet.
You may have time to grow some cole crops or beans, but it will be a tight timeline.
I would recommend that you use this time to add amendments to the soil. Adding them now will give them time to mellow over the winter so that you will have a great bed in the spring. This article will get you started on that:
https://www.gardeningknowhow.com/edible/vegetables/vgen/vegetable-garden-soil.htm