Prinz

Celery

90d to harvest

Fragrant and richly sweet, Prinz celery forms crisp, tender stalks that feel cool and clean in the hand—an inviting crunch with a bright, green snap. The flavor is notably mellow and aromatic, holding its character beautifully whether you’re enjoying it straight from the garden or using it to build flavorful bases and relish-style preparations. Grow Prinz for a steady, garden-to-table harvest of uniform, well-filled stems that stand up with confidence through the season’s shifting temperatures.

Crop Dates

Milestone	Date
Start Indoors	Dec 1st
Last Frost	Feb 9th
Transplant / Sow Outdoors	Feb 9th
Harvest Begins	May 10th
Harvest Ends	Dec 9th

Crop Details

Trait	Value
Days to Maturity	90
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)	35
Harden Off (days)	6

Frequently Asked Questions

What pest or disease most often affects celery (Apium graveolens var. dulce), and how can I manage it?

Celery commonly suffers from leaf spot/early blight-type fungal issues (often worsened by crowded plants and wet foliage). Water at the soil line, space plants so air can move, and remove the worst affected leaves; for fast protection, apply a labeled copper-based fungicide when you first see spotting and repeat as directed. Keep beds free of debris because spores overwinter on plant residue.

How often should I water sweet celery during the main growing phase, and what soil moisture level should I maintain?

During the main growth (after seedlings establish and until harvest), keep the soil consistently evenly moist—typically about 1–2 inches of water per week depending on heat and rainfall. Let the top 1 inch of soil start to dry slightly, but don’t allow the root zone to fully dry out, since celery becomes stringy and can bolt when stressed. Mulch around plants to reduce moisture swings.

How do I know when sweet celery (Apium graveolens var. dulce) is ready to harvest?

Harvest around 90 days from sowing/transplanting when stalks are firm, crisp, and reach a usable size (generally thicker stalks with a solid base). Cut outer stalks first if you want ongoing production, or harvest the whole plant when the center stalks are also developed and the plant forms a tight, upright head. Avoid waiting until stalks become overly tall and hollow-feeling, which can indicate quality decline.