No rose hips on my Rosa rugosa, any ideas why?
Hello All, I bought Rosa Rugosa especially for the great big hips, I also bought another rose for its hips, and neither are giving me hips. Have no idea why. The plants are 5 yrs old, flower wonderfully, on the Rugosa the hips start to form but then go yellow and drop. I have tried watering and mulching this year, thinking it may be lacking water due to a large pine tree in the garden, but this made no difference to the hips. It flowered twice this year, once later in the year than normal, but both times shed its hips. The same with the other one bought for its hips! There are other wild roses growing in the garden, one up a tree, and all produce masses of hips. Any help would be a blessing, thank you