Do they get more than 6 hours of sun per day? Lots of sun will encourage flowering.
Also, in general, a fertilizer that is too high in nitrogen can encourage leaves and shoots but discourage flowering. However, even a balanced fertilizer might not be the best when it comes to hibiscus. Even though phosphorus usually encourages flowering in plants, hibiscus can be sensitive to it, so some recommend that one choose a fertilizer that has medium to medium-high nitrogen (N), low phosphorus (P) and high potassium (K).
Hibiscus also loves organic matter and lots of water in well-draining soil. Make sure the soil pH is slightly acidic.
Hi, Linda,
Do they get more than 6 hours of sun per day? Lots of sun will encourage flowering.
Also, in general, a fertilizer that is too high in nitrogen can encourage leaves and shoots but discourage flowering. However, even a balanced fertilizer might not be the best when it comes to hibiscus. Even though phosphorus usually encourages flowering in plants, hibiscus can be sensitive to it, so some recommend that one choose a fertilizer that has medium to medium-high nitrogen (N), low phosphorus (P) and high potassium (K).
Hibiscus also loves organic matter and lots of water in well-draining soil. Make sure the soil pH is slightly acidic.
Hope this helps!