Mentor

Celery

95d to harvest

Aromatic and deeply savory, Mentor Celery rewards the patient gardener with crisp, cool-green stalks that hold their snap from garden to table. The flavor is clean and bright—less sharp than many, with a gentle sweetness that lingers—while the texture stays pleasantly firm, ideal for long, satisfying harvests. Grow Mentor for standout presence in fresh salads, elegant braises, and silky soups and sauces where its celery character shines.

Crop Dates

Milestone	Date
Start Indoors	Mar 6th
Last Frost	May 15th
Transplant / Sow Outdoors	May 8th
Harvest Begins	Aug 11th
Harvest Ends	Sep 1st

Crop Details

Trait	Value
Days to Maturity	95
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	32
Harden Off (days)	6

Recommended Companions

Bianca Di Maggio Onion

Musselburgh Leek

Spanish Roja Garlic

Patterson Onion

Kettle River Giant Garlic

Tuffy Leek

Frequently Asked Questions

Mentor (Apium graveolens var. dulce) — what pest or disease should I watch for, and how do I treat it?

Watch for celery leaf spot (fungal leaf spots) and aphids; both often show up after humid weather or crowded plants. Remove heavily spotted leaves promptly and improve airflow with wider spacing; if spots are spreading, use a labeled fungicide that includes celery/leaf-spot control. Rinse aphids off with a strong water spray and repeat every few days until controlled, or use an insecticidal soap per label directions.

How often should I water Mentor during the main growing phase (when leaves are filling out)?

Keep the soil consistently moist but not waterlogged from transplanting onward—target evenly damp soil down to the top few inches. In warm periods, this usually means watering about 1–2 times per week, but adjust to weather so the surface never dries out completely. Mulch lightly to stabilize moisture, and avoid letting water splash onto foliage for long stretches.