I have two blue hibiscus shrubs in a sunny plot, but they rarely bloom nowadays. Is there anything I can do to encourage blooms?
On plant Hibiscus Syriacus
- 5 Oct, 2010
Hibiscus Syriacus 'Blue Bird'
£19.00 at Burncoose
Hibiscus Syriacus 'Oiseau Bleu' (Tree Hollyhock (Syn. Blue Bird))
£14.99 at Crocus
Hibiscus Syriacus 'Woodbridge' (Tree Hollyhock)
£12.99 at Crocus