How to Grow Hamburg Parsley
On this page
Hamburg parsley (Petroselinum crispum var. tuberosum) — biennial grown as an annual.
The short answer
- Site
- soil pH 6–7.5
- Biggest risk
- Parsley leaf spot
Core growing advice on this page is checked against named horticultural sources — see References.
Hamburg Parsley (Petroselinum crispum var. tuberosum)
3 sources cited · Verified
At a Glance
Quick Facts
Soil & Growing Conditions
Growth Stages
Harvest & Storage
Diseases
Pests
Plan your Hamburg Parsley planting
Timing for Hamburg Parsley follows soil temperature and frost, not the calendar date. The Global vegetable planting calendar explains the method. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.
Growing Hamburg Parsley in another region
Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.
Sources
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A secondary gardening reference rather than a university or horticultural authority, used only for germination-timing detail RHS's basic profile does not cover, not contradicted by it. Notoriously slow to germinate, taking 14-28 days even under ideal conditions -- germination-inhibiting compounds in the seed coat must break down before the embryo can emerge. Typically planted in spring after the last frost, or in late summer for a fall harvest.
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Mirrors FAO Ecocrop. Fetched and parsed directly for the numeric soil pH range.
These 2 sources are specific to this region. The full list of 3 sources behind this guide (Royal Horticultural Society, Savvy Gardening, Useful Temperate Plants) is in the references of our UK guide to hamburg parsley; they describe the plant itself, which is the same wherever it grows.
Frequently Asked Questions
What soil pH does hamburg parsley need?
A pH of about 6–7.5. That span reflects genuine variation between the authorities we cite rather than a single agreed figure — the References section lists each source's exact range.
What problems affect hamburg parsley?
Our data links 1 disease and 4 pests to this crop. See the sections above for each one and how to manage it.
Plan next season before the problems start
This page gives you the thresholds; the planner turns them into your own calendar. It works from what you can observe and measure in your garden rather than from dates written for somebody else’s latitude.
Get the Global Garden Planner →Instant PDF download · Works in either hemisphere
How this guide is put together
The growing data on this page — sowing windows, pests, diseases, soil and site requirements — comes from named horticultural sources, listed in References below, checked against international horticultural research and extension sources. An automated pipeline assembles that verified data into the page you're reading: it selects which facts to lead with and builds the surrounding prose and layout. It does not invent a date, a source or a number — where a verified value for a field isn't available, the page leaves it out rather than guessing. A person reviews and publishes each page; nothing goes live unverified.
Related Problem Guides
Last verified 2026-09-02
Related guides
More from the same group (roots & tubers):
Where To Go From Here
Take this crop from reading into a written plan for your own beds.
Keep going
Plan the next step
Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.