Tall Utah 52-70R

Celery commonly suffers from leaf blight and early blight-like spotting (often driven by high humidity and long wet leaf periods). Water at the soil line and avoid wetting the foliage, then remove badly spotted outer leaves to reduce spore buildup; if problems persist, rotate beds and consider a labeled fungicide for edible crops, applied according to the label. Watch for aphids on tender leaf stems—rinse them off with a strong jet of water or spot-treat with insecticidal soap to prevent curling and virus spread.

Harvest when stalks are thick, crisp, and reach their mature size, and the central stems are well-filled rather than hollow or stringy. If you gently pull or lift a stalk, it should come up firmly with the plant’s base, and the color should be uniform for the variety’s red/green tones without excessive leaf floppiness. For best quality, harvest before stalks become too fibrous—use days to maturity (~70) as a guide and confirm thickness and firmness first.