Monarch

Celery

Zone 10a Save Garden

🌱 105d to harvest Upright

Monarch Celery brings a cool, crisp fragrance that feels like fresh garden air—tender, pale stalks with a clean, succulent bite a…

Crop Dates

Milestone	Date
Start Indoors	Nov 7th
Last Frost	Jan 16th
Transplant / Sow Outdoors	Jan 2nd
Harvest Begins	Apr 17th
Harvest Ends	Dec 19th

Crop Details

Trait	Value
Days to Maturity	105
Sun Requirements	Part Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	35
Harden Off (days)	6

Recommended Companions

Frequently Asked Questions

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

Celery often suffers from early blight/leaf spot diseases caused by fungal pathogens that spread with splashing water and humid foliage. Remove and discard badly spotted outer leaves, water at the soil line (not over the canopy), and improve airflow by thinning so plants aren’t crowded. If spots spread, apply a labeled fungicide for celery/leaf spot and repeat according to the label—fungal pressure usually rises in warm, damp weather.

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

During the main growth period, keep soil consistently moist but not waterlogged—aim for a damp, crumbly feel in the top few inches. In typical home gardens, this often means about 1–2 inches of water per week total, adjusted so the surface doesn’t dry out between waterings. Use mulch to reduce moisture swings, since celery (Apiaceae) is sensitive to drying that can stunt growth and toughen stems.

How can I tell when sweet celery is ready to harvest (about 105 days)?

Harvest when stalks are fully developed and crisp, with a good internal fill and a firm base near the soil line. You should be able to cut outer stalks first once they reach usable size, then continue harvesting over several weeks rather than pulling the whole plant at once. If you see stalks staying thin or becoming pithy, wait a bit longer—celery commonly needs close to its ~105-day maturity for best texture.

Monarch Celery brings a cool, crisp fragrance that feels like fresh garden air—tender, pale stalks with a clean, succulent bite and a pleasantly mild, celery-sweet flavor. At 105 days, it forms a compact, upright clump that stays crisp and uniform, ideal for refreshing use where you want bright, aromatic character. Grow Monarch for its refined texture and dependable performance, then let its gentle sweetness shine in salads, braises, and slow-simmered sauces, or for pickling when you crave a tangy crunch.

Sowing Tips

Transplant Conditions

Wait until soil reaches 45°F and nights stay above 35°F before moving outdoors. Harden off for 6 days first.

Expert Note

Start celeriac indoors because it needs a long season, but plan to transplant as little as possible and keep roots intact to prevent misshapen, discolored storage roots.