Troubleshooting
Agastache 'Blue Fortune' problems — and how to fix them
Agastache 'Blue Fortune' (Agastache 'Blue Fortune') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Powdery mildew
Poor air flow and humid conditions cause grey mildew on leaves. Space plants well, water at the base, and choose an open, sunny site.
Flopping stems
Too rich a soil, too much shade or overwatering makes stems weak and floppy. Grow in lean soil and full sun for self-supporting growth.
Root rot in wet winters
Soggy winter soil is the main killer. Plant in sharply drained ground; add grit to heavy clay.
Slow spring emergence
Agastache breaks dormancy late — bare ground in spring is normal. Mark its position and avoid disturbing the crown while you wait.
Prevent agastache 'blue fortune' problems before they start
Most agastache 'blue fortune' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for agastache 'blue fortune' in general rather than its problems? Read the full agastache 'blue fortune' care guide — light, water, soil and feeding.
Agastache 'Blue Fortune' problems — FAQ
Why is my agastache 'blue fortune' powdery mildew?
Poor air flow and humid conditions cause grey mildew on leaves. Space plants well, water at the base, and choose an open, sunny site.
Why is my agastache 'blue fortune' flopping stems?
Too rich a soil, too much shade or overwatering makes stems weak and floppy. Grow in lean soil and full sun for self-supporting growth.
Why is my agastache 'blue fortune' root rot in wet winters?
Soggy winter soil is the main killer. Plant in sharply drained ground; add grit to heavy clay.
Why is my agastache 'blue fortune' slow spring emergence?
Agastache breaks dormancy late — bare ground in spring is normal. Mark its position and avoid disturbing the crown while you wait.