A 10-year-old weeping cherry that forms buds but fails to leaf out or bloom likely suffered drought stress the previous summer, compounded by winter desiccation. The stump mulch applied near the trunk is unlikely the cause.
Drought stress damages the vascular system and reduces stored carbohydrates needed for spring growth. Symptoms often appear the following season. Check for brittle branches, cracked bark, or borer holes.
Water deeply during dry spells, especially in late summer. Avoid piling mulch against the trunk ("volcano mulching").
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