Answer: I'd venture that your hydrangea is in poor soil, and hasn't been properly pruned. Slow growth indicates that moisture and nutrients are not readily available to your plant. No blooms are usually a result of a struggling plant that's malnourished, not getting enough sunshine, and possibly poorly pruned. Since your plant bloomed when first purchased, we know it's capable of blooming. If you didn't amend the soil with organic matter prior to planting, you might want to dig the plant, improve the soil, and then replant. Hydrangea's prefer growing in full sunshine. Some late-afternoon shade will keep it from drooping during the hottest summer months. If you can find a sunnier garden spot, you might have better results if you plant it there.
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