How to Grow Hyssops Canada

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. Growth Stages
  3. Quick Facts
  4. At a Glance
  5. Harvest & Storage
  6. Diseases
  7. Pests
  8. Plan your Hyssops planting
  9. Growing Hyssop in another region
  10. Sources
  11. Frequently Asked Questions

Hyssop (Hyssopus officinalis) — Herbaceous perennial or evergreen sub-shrub with linear, aromatic leaves and spikes of tubular, 2-lipped flowers.

Unlike an annual crop, the work here is front-loaded into establishment: get the planting and the site right and the same plants crop for several seasons.

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

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).

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.
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

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.

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 Canada 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.

Sources

The full list of 2 sources behind this guide (Harvest to Table, Royal Horticultural Society) is in the references of our UK guide to hyssop; they describe the plant itself, which is the same wherever it grows.

Frequently Asked Questions

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

Short-season growing is arithmetic before it is technique: days to maturity against frost-free days decides what will finish at all. The Canada Garden Planner does that subtraction for your region before you sow.

Get the Canada Garden Planner →

Instant PDF download · Written for Canadian 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 Canadian hardiness-zone and frost-date data, with provincial agriculture and university extension sources cited directly where one exists for a crop. 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 Canada

Crops With the Same Problems

Last verified 2026-09-04

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