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Clematis montana 'Rubens' Poor Flowering in England

Fixing Nitrogen-Induced Bloom Failure

Excessive nitrogen (from lawn fertilizer runoff) causes lush foliage but few flowers on Clematis montana. Switch to 5-10-10 fertilizer (bulb/tomato formula) in spring and summer. Prune only after flowering—blooms on old wood.

Corrective Actions

Stop high-nitrogen fertilizers near clematis
Apply bloom-boosting fertilizer twice yearly
Prune immediately post-flowering
Consult British Clematis Society for local advice

Soil nutrient balance is key to flowering performance.

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