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Why Orchid Buds Drop and Flowers Wither Prematurely

Normal Flower Lifespan

An orchid held for five weeks shows withering petals and dropped unopened buds. Average orchid flower life is about one month, so the open blooms simply aged naturally. However, bud drop (bud blast) indicates stress.

Common Causes of Bud Blast

Low humidity or extreme temperatures (too hot or cold)
Insufficient plant energy—small plants may abort buds to survive
Root loss from overwatering or degraded mix, reducing water/nutrient uptake

Recommended Action

Repot now in fresh orchid mix. During repotting, inspect roots: remove any collapsed, mushy ones. Fresh mix restores aeration and drainage, supporting new growth. This is standard practice after each bloom cycle.

Orchids: Encouraging Blooms on a Mature Phalaenopsis Orchid; Mealybugs on Orchids: Identification, Treatment & Root Rot Prevention; Post-Keiki Removal: When Will My Orchid Bloom Again?; Orchid Keikis: What They Are, When to Remove & How to Pot Successfully; Dying Orchid with No Leaves: Crown Rot Likely Fatal; Phalaenopsis Dormancy Myth: They Don't Need a Rest Period; Rescuing a Sick Phalaenopsis: Repotting from Soggy Roots; Cut Orchid Spike with Bud in Water: Will It Root?; Phalaenopsis Spike Browning: Genetics, Not Neglect; Reviving a Non-Blooming African Violet After Years

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