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I really do not like to plant new rosebushes any later than mid July. I have planted some as late as mid-august but had to baby them through the winter and make sure they had good soils moisture. The root system needs all the time it can get to get established so it can support a big rose and the beautiful blooms we all love.

The seed itself should not be harmful, however the resulting sprouted plants could be. Roses do not like to have to battle other plants for their water or nutrition. They will tolerate some companion plants but it is just that, they will tolerate them but would prefer not to have to deal with them. Every so often it would be good to take the shop vac out and vacuum up as much of the seed as possible.

Here is a link to any article for you on this subject: https://www.gardeningknowhow.com/ornamental/flowers/roses/no-blooms-on-roses.htm

Make sure the one rosebush is not shading the other as the sun being limited to one rosebush over another can and will effect the performance of the rosebush.

Hi Nancy. It is likely a beetle or insect of some kind, could even be a night feeding worm. I recommend getting a product called Bayer Tree and Shrub Granules. Give each rose some of this and water it in well. The systemic insecticide will move up through the root system, into the canes, foliage and blooms. This should take care of the problem. If it is a major attack by the insects, you could spray the rosebushes with a good insecticide once while waiting for the granular application to take hold.

You may not be able to as the winter kill may have too strong a hold upon them. However here is something you can try that has worked for me at times. Water all the roses with some water that has both root stimulator and a product called Super Thrive in it. Water them with such mixture the next 5 times they need water. You can also rough up the soils around the base of each rosebush and sprinkle One Cup of Epsom Salts around the base of each rosebush. Work the Epsom Salts into the soils a bit and water well. This also works for a great Spring "kick start" for the rosebushes.

It is a bit late in the year now, but you might try Roses of Yesterday and Today. Just do a search for them on google. Also you could contact Heirloom Roses and see if they have it. Another place would be Regan's Nursery.