Why Eggshells and Coffee Grounds Didn't Stop a Rose from Blooming

Understanding Rose Bloom Cycles

A 9-year-old pink rose in alkaline Las Vegas soil bloomed heavily April–May, then stopped after eggshells (lime) and coffee grounds (nitrogen/phosphorus) were added.

Fact Check

• Eggshells add calcium (lime)—raises pH, but roses tolerate alkaline soil.
• Coffee grounds add nitrogen and some phosphorus—phosphorus promotes blooms.
• Neither stops flowering.

Real Reason: Natural Bloom Cycle

Most repeat-blooming roses have two main flushes: early summer and midsummer. Your rose is likely in the resting phase between flushes. It will rebloom in 4–6 weeks if it's a repeat variety.

If It's a Once-Bloomer

Some old roses bloom only once per year. If so, no amount of fertilizer changes that.

Wait and observe. No corrective action needed.