Vegetable · Apiaceae family

Hamburg parsley

Petroselinum crispum var. tuberosum

Full sun to part shade 7⅞ in–2 ft 11⅜ in × 7⅞ in–11¾ in Harvest August–February to −84 °F

In short a 10-second read

SunFull sun to part shade

Size7⅞ in–2 ft 11⅜ in
spacing 7¾ in

Water~0.98–1.37 qt/sq ft
a week in a dry summer

PlantingMay

HarvestAugust–February

WinterNo winter protection

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average to moist soil.

Sun

Sun6 hours or more

Part shade3–6 hours

Shadeunder 3 h

Soil

tolerates any pH

acidicneutralalkaline

average to moistclayloamysandy

Watering

~0.98–1.37 qt/sq fta week in a dry summer

keep the soil evenly moistless when it rains

Frost

−84 °F

no winter protection

How much space it takes

Mature size.

The mature plant next to a person (69 in).

7⅞ in–2 ft 11⅜ in× spread 7⅞ in–11¾ in

Plant 7¾ in apart.

How to plant: in rows, 2¾ in in the row, 11¾ in between rows

The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Typical for a temperate climate (four seasons). The line shows the current month.

The year at a glance

SowingPlantingFeedingHarvestCheckProtection

Now, in October: time to harvest. · Protection – Cover the crop with fine insect mesh against carrot fly. · watch for carrot fly · watch for celery leaf mining fly.

JanFebMarAprMayJunJulAugSepOctNovDec

Sowing

JanFebMarAprMayJunJulAugSepOctNovDec

direct sowing: March–April; sow indoors: March–April

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

transplant outdoors: May

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

March–April

Harvest

JanFebMarAprMayJunJulAugSepOctNovDec

August–February

Check

JanFebMarAprMayJunJulAugSepOctNovDec

May–October: Regularly check leaves for larval tunnels and pinch off affected parts.

Protection

JanFebMarAprMayJunJulAugSepOctNovDec

May–October (protection): Cover the crop with fine insect mesh against carrot fly.

Feeding

Nutrition.

Horn meal

up to 0.33 oz/sq ft · in 1 dose · March–April

JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

Carrot fly

Psila rosae

pest

More about this problem

What you will see

Rust-brown scars and tunnels in the roots; slender creamy-yellow larvae up to ⅜ in inside.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec

May–October

How to protect

Prevention
- Sow thinly so you do not have to thin; thinning out seedlings attracts females with the scent.
- Cover crops with fine mesh and rotate crops; full cover is more effective than a barrier.
Biological spring and summer, when larvae hatchA mixture of pathogenic nematodes watered into the soil against young larvae (Steinernema feltiae in spring, S. carpocapsae in summer).

Carrot flypest · May–October

What you will see

Rust-brown scars and tunnels in the roots; slender creamy-yellow larvae up to ⅜ in inside.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec

May–October

How to protect

Prevention
- Sow thinly so you do not have to thin; thinning out seedlings attracts females with the scent.
- Cover crops with fine mesh and rotate crops; full cover is more effective than a barrier.
Biological spring and summer, when larvae hatchA mixture of pathogenic nematodes watered into the soil against young larvae (Steinernema feltiae in spring, S. carpocapsae in summer).

More about this problem

Celery leaf mining fly

Euleia heraclei

pest

More about this problem

What you will see

Blotchy eaten-out areas (tunnels) in the leaves, which turn brown and papery.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec

May–October

How to protect

Prevention
- Cover plants with fine mesh and rotate crops.
- Check plants regularly in summer.
By hand in summer and at the end of the seasonPinch off affected parts of leaves; at the end of the season bury affected leaves deeply (you destroy overwintering pupae).

Celery leaf mining flypest · May–October

What you will see

Blotchy eaten-out areas (tunnels) in the leaves, which turn brown and papery.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec

May–October

How to protect

Prevention
- Cover plants with fine mesh and rotate crops.
- Check plants regularly in summer.
By hand in summer and at the end of the seasonPinch off affected parts of leaves; at the end of the season bury affected leaves deeply (you destroy overwintering pupae).

More about this problem

Sources (2)

rhs.org.uk 2

Bed neighbors

Good and bad neighbors.

Each neighbor shows how we know it.

✓Good neighbors

Onion study
Tomato expert advice
Broccoli tradition
Kale tradition

✕Bad neighbors

Carrot expert advice
Lettuce expert advice

Frequently asked

Quick answers.

When do I sow Hamburg parsley?

In March–April (direct sowing, sow indoors).

When is Hamburg parsley harvested?

In August–February.

Does Hamburg parsley tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does Hamburg parsley need?

At maturity 7⅞ in–11¾ in wide and 7⅞ in–2 ft 11⅜ in tall; recommended spacing 7¾ in.

Carrot fly — what can you do?

Sow thinly so you do not have to thin; thinning out seedlings attracts females with the scent. A mixture of pathogenic nematodes watered into the soil against young larvae (Steinernema feltiae in spring, S. carpocapsae in summer).

Celery leaf mining fly — what can you do?

Cover plants with fine mesh and rotate crops. Pinch off affected parts of leaves; at the end of the season bury affected leaves deeply (you destroy overwintering pupae).

Sources (13) Checked 24 October 2026