I have 4 box rose plants about 5 years old.I noticed some stems with very many small diameter thorns. The new groth on those stems is dark red. What causes this? It doesn't appear to be normal. What can I do to control this. Reply
I have 4 box rose plants about 5 years old.I noticed some stems with very many small diameter thorns. The new groth on those stems is dark red. What causes this? It doesn't appear to be normal. What can I do to control this.