How to Grow Hyssops UK

By the SoilCommander Editorial Team, under the guidance of Nitin Sharma, Co-Founder · · How we check our facts

On this page
  1. Hyssop (Hyssopus officinalis)
  2. When to Plant Hyssops in the UK
  3. Quick Facts
  4. At a Glance
  5. Growth Stages
  6. Harvest & Storage
  7. Diseases
  8. Pests
  9. Hyssop Photo Gallery
  10. Plan your Hyssops planting
  11. Growing Hyssop in another region
  12. References
  13. Frequently Asked Questions

In the UK, hyssop goes in the ground early March to mid April.

Timing is the decision that matters most in the UK: sowing early March, and that same window applies across all 4 regions covered here.

The short answer

Plant
Early March to mid April
Biggest risk
Foot and root rot

Core growing advice on this page is checked against named horticultural sources — see References.

Hyssop (Hyssopus officinalis)

A bee pollinating hyssop flowers — “Bumblebee on hyssop in Sweden” by Inhemska trädgården is licensed under CC BY-SA 4.0.

2 sources cited · Verified

When to Plant Hyssops in the UK

When to plant hyssops in the UK: in Southern England, sow early March to mid April. Find your area in the table below.

A labeled hyssop plant in a raised bed — “Hyssopus officinalis у музеі Джэфры” by Хомелка is licensed under CC BY-SA 4.0.
“Hyssopus officinalis у музеі Джэфры” by Хомелка is licensed under CC BY-SA 4.0.
Region Sow
Southern England early March to mid April
Midlands early March to mid April
Northern England early March to mid April
Scotland early March to mid April
Southern England - detail & sources

Harvest to Table sows indoors a week or so before the last frost, or direct-sows after the last frost; applied here as a spring sowing window.

Midlands - detail & sources

Harvest to Table sows indoors a week or so before the last frost, or direct-sows after the last frost; applied here as a spring sowing window.

Northern England - detail & sources

Same spring sowing window as elsewhere in the UK -- RHS rates hyssop H7 hardy below -20°C throughout Europe, so no regional hardiness caution is needed here.

Scotland - detail & sources

Same spring sowing window as elsewhere in the UK -- RHS rates hyssop H7 hardy below -20°C throughout Europe, so no regional hardiness caution is needed here.

A page from the UK Vegetable Garden Planner PDF: the crop rotation planner, with a planning grid and four-bed rotation tips

Plan your hyssop — and the rest of the plot

This page covers hyssop. For every crop's sowing months on one chart, use the free UK vegetable planting calendar, and browse the UK vegetable growing guides for what else to grow alongside it. When you want the whole season on paper, the UK Vegetable Garden Planner is a printable PDF:

  • Twelve month-by-month sowing and harvest spreads
  • Raised bed, allotment and container layout pages for your own plot
  • A four-year crop rotation planner
  • Seed inventory, sowing log and harvest tracker
See inside the UK Vegetable Garden Planner →

Instant PDF download · reprint every season

Quick Facts

A hyssop flower spike — “Hyssopus officinalis RF” by Robert Flogaus-Faust is licensed under CC BY 4.0.
“Hyssopus officinalis RF” by Robert Flogaus-Faust is licensed under CC BY 4.0.
Factor Value
Drainage Fertile, well-drained, tolerates chalk and loam (RHS). Harvest to Table: compost-rich, well-drained; dislikes soggy soil.
Lifecycle Herbaceous perennial or evergreen sub-shrub with linear, aromatic leaves and spikes of tubular, 2-lipped flowers. RHS rates it H7, hardy below -20°C throughout Europe; Harvest to Table gives an even wider US zone range (3-11), cold hardy to -35°F.
Edible parts leaves, flowers

At a Glance

A pink-flowered hyssop variant — “Hyssopus officinalis 002” by H. Zell is licensed under CC BY-SA 3.0.
“Hyssopus officinalis 002” by H. Zell is licensed under CC BY-SA 3.0.
Hyssopus officinalis Hyssop Foot and root rot (gene… Leafhoppers Root-knot nematodes Scale insects DISEASES PESTS

Growth Stages

Close-up of narrow aromatic hyssop leaves — “Hyssopus officinalis Hyzop lekarski 2019-05-17 04” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0.
“Hyssopus officinalis Hyzop lekarski 2019-05-17 04” by Agnieszka Kwiecień, Nova is licensed under CC BY-SA 4.0.
Stage BBCH Notes
Sowing 0 Harvest to Table: sow 1/4in deep, germinating in about 14 days; sow indoors a week or so before the last frost, or direct-sow after the last frost or in autumn. RHS: propagate by seed or softwood cuttings in summer, or sow in containers in a cold frame in autumn.
Planting and establishment 0 Full sun, well-drained soil (RHS; Harvest to Table); space 12-18in apart (Harvest to Table). Tolerates dry conditions well once established but dislikes wet soil.
Pruning 3 RHS: pruning group 10, in mid-spring. Harvest to Table: pruning after flowering is essential to prevent legginess and encourage bushier growth with repeat bloom.
Flowering and harvest 6 Attracts bees, butterflies and hummingbirds -- beekeepers value the resulting honey (Harvest to Table). Harvest leaves as needed before flowering; pick flowers when three-quarters open, in the morning, for the strongest oils; cut whole branches for drying (Harvest to Table).

Harvest & Storage

Close-up of a hyssop flower spike — “Hyssopus officinalis 004” by H. Zell is licensed under CC BY-SA 3.0.
“Hyssopus officinalis 004” by H. Zell is licensed under CC BY-SA 3.0.

When to pick: Harvest to Table: pick leaves as needed before the plant flowers; harvest flowers when the blooms are three-quarters open, in the morning for the strongest oils.

Storage

Harvest to Table: cut whole branches for drying leaves or flowers.

Diseases

Close-up of purple hyssop flowers — “Hyssopus officinalis 005” by H. Zell is licensed under CC BY-SA 3.0.
“Hyssopus officinalis 005” by H. Zell is licensed under CC BY-SA 3.0.
Foot and root rot (general)
moderate

Named directly by Harvest to Table: root rot in soggy soil, the main disease risk for this crop. RHS reports the plant generally disease-free in the UK -- a real difference in emphasis kept honest.

Pests

A bee pollinating hyssop flowers — “Bumblebee on hyssop in Sweden” by Inhemska trädgården is licensed under CC BY-SA 4.0.
“Bumblebee on hyssop in Sweden” by Inhemska trädgården is licensed under CC BY-SA 4.0.
Leafhoppers
low

Cicadellidae (various spp.)

Named directly by RHS.

Root-knot nematodes
low

Meloidogyne spp.

Harvest to Table names "nematodes" without a specific species -- recorded against the existing root-knot nematode entry.

Scale insects
low

Diaspididae / Coccidae

Named directly by Harvest to Table ("scale"); can be picked off and crushed.

Plan your Hyssops planting

When to sow and plant Hyssops depends on your own frost dates. Check the UK vegetable planting calendar. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.

Growing Hyssop in another region

Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.

References

  1. Hardiness: zones 3-11, cold hardy to -35°F. Site/soil: full sun, tolerates partial shade; compost-rich, well-drained soil; pH 7.0-8.0, slightly alkaline. Spacing: 12-18in apart. Sowing: indoors a week or so before last frost, or direct-sown after last frost or in autumn; 1/4in deep, germinates in about 14 days. Harvest: leaves as needed before flowering; pick flowers when blooms are three-quarters open, in the morning; cut whole branches for drying leaves or flowers. Pests: scale (picked off and crushed) and nematodes can occur. Diseases: susceptible to root rot in soggy soil -- ensure well-drained soil. Propagation: readily self-sows from seed; 6in stem cuttings with rooting hormone; 4-6in root divisions in spring or fall.

  2. Soil: fertile, well-drained, alkaline to neutral; tolerates chalk and loam; moist but well-drained or well-drained. Sun/aspect: full sun or partial shade, south/west-facing. pH: alkaline or neutral. Hardiness H7 (below -20°C, hardy throughout Europe). Size: 0.1-0.5m height, 0.5-1m spread, 5-10 years to maturity. Exposure: exposed or sheltered. Propagation: seed or softwood cuttings in summer; sow seed in containers in a cold frame in autumn. Pruning group 10, mid-spring. Pests: may be susceptible to leafhoppers. Diseases: generally disease-free.

2 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.

Frequently Asked Questions

When should I sow hyssop in the UK?

In Southern England, from early March. In Scotland, wait until early March. Treat these as a guide rather than a fixed date — the governing rule is to sow only once frost risk has passed and temperatures are reliably warm enough.

When do I sow hyssop?

Sow early March to mid April.

What problems affect hyssop?

Our data links 1 disease and 3 pests to this crop. See the sections above for each one and how to manage it.

Plan next season before the problems start

Most of the advice on this page comes down to timing and spacing — sowing at the right moment, rotating beds, and giving plants enough airflow. The UK Garden Planner lays your plot out month by month so those decisions are already made before the season starts.

Get the UK Garden Planner →

Instant PDF download · Written for UK growing conditions

SoilCommander Editorial Team — under the guidance of Nitin Sharma, Co-Founder

Every growing guide is checked against RHS, USDA Cooperative Extension, and other named horticultural authorities before publishing. How we check our facts.

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 RHS and Met Office guidance. 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.

Vegetable Growing Guides UK

Crops With the Same Problems

Last verified 2026-09-04

Plan Hyssops by month

The months this guide gives for sowing or planting, each with the full list of jobs for that month in the UK:

More from the same group (herbs & aromatics):

Relevant next steps

Where To Go From Here

Take this crop from reading into a written plan for your own beds.

UK garden plannerTurn this crop guide into sowing dates, bed layouts and a harvest record. All growing guidesBrowse every crop we cover for your region, A to Z. Planting CalendarSee how this crop fits alongside everything else you are growing.

Keep going

This guide in another region
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