White Gem

Parsnip

Zone 4a Save Garden

🌱 80d to harvest Taproot

Crisp, sweet, and luminous as a winter moon, White Gem parsnips develop creamy-white roots with a smooth, refined finish and a te…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	May 15th
Transplant / Sow Outdoors	May 15th
Harvest Begins	Aug 3rd
Harvest Ends	Sep 24th

Crop Details

Trait	Value
Days to Maturity	80
Sun Requirements	Full Sun
Growth Habit	Taproot
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	50
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Recommended Companions

Georgia Rattlesnake Onion

German White Garlic

Frequently Asked Questions

What’s the most common disease problem for Pastinaca sativa (parsley/white carrot-like root, i.e., parsnip) and how do I manage it?

Parsnips (Pastinaca sativa, Apiaceae) commonly suffer from Alternaria leaf blight, which shows up as brown to dark spots that expand on the foliage. Remove and discard infected leaves early, improve airflow by thinning crowded plants, and avoid watering the leaves by aiming water at the soil. If spots spread quickly, treat preventively with a labeled fungicide according to the product directions and stop harvesting affected tops (roots are still usable if they’re not visibly rotting).

How often should I water Pastinaca sativa during the main growing phase?

During the main root-filling period (roughly midseason to maturity), keep the top 6–8 inches of soil consistently evenly moist—about 1 inch of water per week total, split across 1–2 waterings if it doesn’t rain. Let the surface dry slightly between waterings, but don’t allow the soil to fully dry out, because parsnip roots can fork and develop poor texture after drought. Mulch lightly to reduce moisture swings, especially in full sun beds.

How can I tell when my Pastinaca sativa is ready to harvest?

Harvest when the roots are thick and feel firm, typically around 80 days from sowing, with a diameter that matches the variety’s expectations (often about 1–2 inches for many home parsnip types). For best flavor, plan a harvest window after a light frost has touched the crop, because cold boosts sweetness without requiring overgrowth. If you’re unsure, gently dig one test root—if it’s substantial and intact, you’re ready to harvest the rest.

Crisp, sweet, and luminous as a winter moon, White Gem parsnips develop creamy-white roots with a smooth, refined finish and a tender, fine-grained bite. At maturity, their flavor turns pleasantly honeyed and mellow, with a gentle earthiness that shines whether you lift them for fresh use or let them sweeten in cool weather. Grow White Gem for reliable, uniform roots—ideal for roasting, purees, and velvety soups, or for pickling into bright, tangy accents.

Sowing Tips

Transplant Conditions

Wait until soil reaches 45°F and nights stay above 28°F before moving outdoors.

Expert Note

For the sweetest, fastest roots, keep the seedbed consistently moist until germination and avoid letting seedlings dry out or get root-bound.