That explains a lot - I put banana peels in the pots of my 3 small parade roses and one tall heirloom rose. I noticed that rose aphids only attack my tall rose bush, and even then they only infest leaves toward the top of the plant. They don't go anywhere near the bottom of the plant, or near the soil where the banana peels are. To deal with the aphids at the top of the plant, I sprayed them with a mix of 1 tsp dawn soap + 3/4 quart of water. This was only an hour ago, and now the aphids are dying and falling off the leaves when sprayed with water. I'll gently hose off my rose bush in a few hours to rinse away the dead aphids and soap. I'll do this again in a week or so. I also introduced thousands of ladybugs to my environment, but they opted for easier pickings in my variety of small potted plants than climbing my tall rose bush for aphid hunting. Still, I've noticed improvement and less issues with the overall health of my garden since adding ladybugs.
That explains a lot - I put banana peels in the pots of my 3 small parade roses and one tall heirloom rose. I noticed that rose aphids only attack my tall rose bush, and even then they only infest leaves toward the top of the plant. They don't go anywhere near the bottom of the plant, or near the soil where the banana peels are. To deal with the aphids at the top of the plant, I sprayed them with a mix of 1 tsp dawn soap + 3/4 quart of water. This was only an hour ago, and now the aphids are dying and falling off the leaves when sprayed with water. I'll gently hose off my rose bush in a few hours to rinse away the dead aphids and soap. I'll do this again in a week or so. I also introduced thousands of ladybugs to my environment, but they opted for easier pickings in my variety of small potted plants than climbing my tall rose bush for aphid hunting. Still, I've noticed improvement and less issues with the overall health of my garden since adding ladybugs.