Jersey Knight

Family: Asparagaceae Vegetable

Tender spears of Jersey Knight rise with a refined, sweet-green allure—firm yet yielding, with a clean snap and a silky finish.

This market-class asparagus forms sturdy crowns that establish with confidence, producing consistently straight spears that are especially prized for their bright flavor and elegant texture. Grow Jersey Knight for long-season harvests that shine in fresh spring displays and shine again in preserves and pickled specialties.

Light: Full SunMaturity: 730 DaysHabit: Perennial_Crown

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Growing note: Zone 6b has only 174 frost-free days — shorter than this crop's 730-day maturity. Outdoor planting is not viable; use protected cultivation.

Milestone	Date
Last Frost	Apr 25th
Growing Approach	Protected Environment Only

Crop Details

Trait	Value
Days to Maturity	730
Sun Requirements	Full Sun
Growth Habit	Perennial_Crown
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	50
Min Night Temp (°F)	35
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Jersey Knight leans sweet and refined, so it rewards fast heat—blanch, then sear to lock in that snap and avoid the rubbery fade. Its bright spring character plays best with lemon-butter richness or a light brine, rather than heavy, smoky sauces.

Best Uses

quick blanch-and-sear so the spears snap instead of softening
shaved asparagus salads with lemon vinaigrette and thin fats
creamy spring pasta with restrained sauce so the spears stay bright
quick pickles/brine for tangy, snappy preserved bites

Flavor Profile

sweet green flavor clean, snappy tenderness slight silky finish mildly earthy asparagus core

Kitchen Pairings

lemon butter parmesan garlic olive oil poached egg

Frequently Asked Questions

What pest or disease commonly affects Asparagus officinalis, and how can I prevent it in my beds?

Asparagus rust (fungal) often appears as orange-brown pustules on fronds, especially after humid weather. Cut off and remove infected fern growth in the fall, then clean up volunteer spears/frond debris so spores don’t overwinter. Ensure good airflow by spacing crowns properly and avoid overhead watering; if rust is recurring, apply a labeled fungicide for asparagus at the first sign according to the product directions.

How often should I water Asparagus officinalis during the main growing phase (when spears are actively growing)?

During the spear-harvest season, keep the soil consistently moist but not soggy—aim for about 1–1.5 inches of water per week, increasing during hot spells. Water deeply so moisture reaches the crown zone, then let the top 1–2 inches dry slightly before watering again to prevent crown rot. In sandy soils you may need more frequent watering (e.g., 2–3 shorter soakings) to maintain even moisture.

How do I know when to harvest Jersey Knight asparagus (Asparagus officinalis)?

Harvest when spears are thick and tender—typically when they’re about 6–8 inches tall for home beds and the tips are still tight (not open into feathery fern). Cut spears at ground level with a knife as soon as they reach the target size; don’t wait for the spears to elongate and loosen. Plan a lighter harvest in the first 1–2 seasons after planting, then full harvest once the crowns are established.

Jersey Knight

Planting Schedule

Crop Dates

Crop Details

Culinary Notes

Frequently Asked Questions