How much can I get from one acre of garden beans?
Don't know if this will help, but last year we planted 7 pole beans and from those we got over 300 beans total for the season. This may give you an idea of how many plants to put into your acre.
If my Fordhooks have runners on them, do I need to stake them?
You can. This article may help: https://www.gardeningknowhow.com/edible/vegetables/beans/pole-bean-supports.htm
My question is, if I plant 2 or 3 types of climbing beans, will they cross pollinate and cause mutations in future crops if harvested seeds are used again? If so, what is a safe distance to plant the different types of beans?
This article will help explain the cross pollination process: https://www.gardeningknowhow.com/edible/vegetables/vgen/cross-pollination.htm
I have gorgeous vines, lots of leaves and climbing up the trellis going on, but no blossoms! My Italian flat beans (planted at the same time) have a ton of blooms and tiny beans on them, but my Kentucky wonders are duds! What's going on and how can I get them to produce?
They may have too much nitrogen. This will cause lush growth but few or even no blooms. Try adding bone meal to the soil. This will add phosphorous and help offset the nitrogen.
This article will have some other possibilities:
https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm
Does it help to notch beans before planting?
This is not required nor proven to make any difference; however, if you’re not careful, you could wind up making the beans more susceptible to diseases. Here's an article that may help: https://www.gardeningknowhow.com/edible/vegetables/beans/tips-for-growing-beans.htm
I once heard the saying "after greens, plant beans". . . something to do with nitrogen. Have you heard this before?
Greens, being green and leafy, take a lot of nitrogen from the soil. Old time gardeners might not have known about the chemistry involved, but without all that scientific stuff they figured out that legumes fixed nitrogen back into the soil. Organic gardening at its best!
My beans seem to be growing fine in the greenhouse; I only have a few plants. However, the leaves seem to be changing to an almost yellow color. Can you tell me what is happening?
Is there enough air circulation in the greenhouse? If not, it could be due to excessive moisture. Excessive moisture is an ideal environment for the development of fungus as well. If a fungal infection has occurred, this could prove detrimental to the plants. While fungicides are available, timing of the disease is crucial in order to save the plants. Root rot can cause pole bean leaves to turn yellow. To check for root rot, carefully pull out one of your pole bean vines and check the roots. Healthy roots should be white.