We planted two 10" sunflower seeds and they have grown well, until the flower itself started to open and it has not stood up at all. It continues to slump over to one side. I"m afraid it's going to break from being top heavy.
some need to be staked
I have 5 giant sunflower plants I grew from seed. They are now about 10 feet tall, but no flowers. I notice my neighbors have sunflowers (not giants) and their plants all have really great flowers full of seeds. Should I pull them out now that it is the end of July or wait and see?
You should at least be able to see a flower bud by now. Examine the top of one and see if you see damage. It is possible that a squirrel ate the flower bud off. If you don't see any damage, wait a bit longer. It may be just a slow starters.
Does anyone know of a supplier of the black Peredovik sunflower, and is it open pollinated? All the seed offerd buy commercial agricultural merchants is F1, not much use to a seed saver.
Check some of the nurseries that sell organic and non GMO seed. Seed Saver's Exchange, Baker's Heirloom Seeds and Territorial Seed Company are some that immediately come to mind.
My sunflowers are about 7 ft. tall; however, a bug of some sort is eating all the new leaves on the upper most part of the plant. I have tried a few different products, such as insecticidial soap and an all purpose bug killing product for a variety of bugs, neither of them seem to be making a difference. I never see any bugs on the plant except tiny little brown ants. What can I do to get rid of the bugs?
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/sunflower/sunflower-problems.htm
I have sunflowers planted in a large garden. This garden is located in a rural setting. However, for the last couple of years when they form their flower heads, mysteriously many appear to be 'clipped' but still hanging on to the stem. It is very frustrating. Is it an insect, or bird that could cause this?
This is puzzling. While birds could definitely be an issue, it sounds more like the Sunflower head-clipping weevil (yes, there is such a thing). The pest will make a ring of bites around the head until it finally falls to the ground. Since yours appears to hang like it's been clipped, I'll wager that's the problem. Here is some helpful information: http://www.entomology.k-state.edu/DesktopDefault.aspx?tabid=654
Here is an article that you may find helpful about additional pests: https://www.gardeningknowhow.com/ornamental/flowers/sunflower/sunflower-problems.htm
How do protect my sunflowers from birds and squirrels?
Sunflowers are a natural food for squirrels and many birds. You can try tying aluminum pie pans to the stalks to frighten them, but those little critters are smart and outwitting them can turn into a full time job. These articles might offer some other suggestions: https://www.gardeningknowhow.com/edible/fruits/fegen/protect-fruit-tree-birds.htm (some of these ideas might work on your sunflowers too)
I planted my sunflower seeds indoors, let the small plants and a bed of seeds sit on the garden table in the warm sun, and then brought them in. First, something actually ate the seeds out of the small seedlings that had a bit still stuck, and some just ate the whole thing and left the shells. I saved about 4 of them and took them indoors till they were about 12 inches tall and again put them out just for the warm sun, and now small green worms seem to be eating them. What are these things, and what can I do to protect them?
Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/sunflower/sunflower-problems.htm