Troubleshooting
Clematis 'Multi Blue' problems — and how to fix them
Clematis 'Multi Blue' (Clematis 'Multi Blue') 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.
Clematis wilt
Sudden stem collapse from fungal infection; remove affected growth to healthy tissue. Planting the crown deep helps the plant regenerate from below the soil.
Reversion to single flowers
Later-season and stressed flowers may open single rather than double; this is normal for 'Multi Blue' — the spiky double form appears mainly on overwintered old wood.
Hot, dry roots
Causes flagging and poor bloom; shade the base and mulch to keep the root zone cool and evenly moist.
Powdery mildew
White fungal coating in humid, crowded sites; improve airflow, avoid wetting foliage and strip affected leaves.
Prevent clematis 'multi blue' problems before they start
Most clematis 'multi blue' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Clematis — the full care guide.
Clematis 'Multi Blue' problems — FAQ
Why is my clematis 'multi blue' clematis wilt?
Sudden stem collapse from fungal infection; remove affected growth to healthy tissue. Planting the crown deep helps the plant regenerate from below the soil.
Why is my clematis 'multi blue' reversion to single flowers?
Later-season and stressed flowers may open single rather than double; this is normal for 'Multi Blue' — the spiky double form appears mainly on overwintered old wood.
Why is my clematis 'multi blue' hot, dry roots?
Causes flagging and poor bloom; shade the base and mulch to keep the root zone cool and evenly moist.
Why is my clematis 'multi blue' powdery mildew?
White fungal coating in humid, crowded sites; improve airflow, avoid wetting foliage and strip affected leaves.