Guernsey Half Long

Family: Apiaceae Vegetable

Sweet, nutty fragrance rises from the soil as Guernsey Half Long reaches maturity—its roots develop a smooth, creamy-white core with a gentle taper and a tender, fine-grained bite.

The texture stays pleasantly crisp and uniform, making it a standout for roasting, pan-skillets, and velvety sauces, while its classic shape is equally well suited for pickling-style preparations. For gardeners who love dependable performance, Guernsey Half Long offers a long, elegant harvest window and a richly satisfying flavor in every batch.

Light: Full SunMaturity: 120 DaysHabit: Taproot

Botanical illustration of Guernsey Half Long

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

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Aug 23rd
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	120
Sun Requirements	Full Sun
Growth Habit	Taproot
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Guernsey Half Long’s fine-grained, uniform flesh roasts into a creamy center without going woody, so it’s built for high-heat caramelization and smooth purée work. Its naturally sweet, nutty profile plays especially well with butter and herb heat—then honey or pepper to sharpen the finish.

Best Uses

hot-oven roasting until caramelized at the edges
butter-pan skillet glazing for a candied exterior
velvet purée or soup base (blend smooth, not stringy)
quick pickling-style slices for a bright, snappy crunch

Flavor Profile

sweet, nutty parsnip fragrance fine-grained, creamy-white interior tender bite with a crisp roast-edge low-bitterness, gentle earthiness

Kitchen Pairings

butter thyme sage honey garlic black pepper

Frequently Asked Questions

What pest or disease most commonly affects Pastinaca sativa (parsnip), and what should I do?

Parsnips (Pastinaca sativa) are often bothered by carrot rust fly and can also develop fungal leaf blights in wet, humid weather. Use floating row cover over the bed from emergence until about mid-season to block egg-laying, and thin promptly so foliage dries faster. Remove and discard badly spotted tops early, and avoid overhead watering to slow blight spread.

How often should I water Pastinaca sativa during the main growing phase, and what soil moisture level do they need?

During active root growth (roughly weeks 4–10 after emergence), keep the soil consistently evenly moist—aim for about 1 inch (2.5 cm) of water per week, split into 1–2 deep waterings. If the soil swings from dry to wet, parsnip roots can crack or fork, so water more steadily during hot spells and mulch lightly to reduce drying.

How can I tell when guernsey half long parsnips (Pastinaca sativa) are ready to harvest?

Harvest when roots are firm and pencil-thick with good length, typically around 120 days from sowing. You can start lifting when the tops begin to yellow and after a light frost for sweeter flavor, but plan to harvest before the ground repeatedly freezes hard. Loosen the soil deeply with a fork so the long roots come out cleanly without snapping.