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How to Grow Wild Rockets Canada | Planting & Establishment

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Wild Rocket (Diplotaxis tenuifolia)

A wild rocket plant covered in small yellow flowers — “Diplotaxis tenuifolia-Roquette jaune-20211018” by Daniel VILLAFRUELA is licensed under CC BY-SA 4.0. Source: Wikimedia Commons

1 sources cited · Verified

The short answer

Site
6+ hours of sun, soil pH 5.5–7.5
Biggest risk
Downy mildew

Wild rockets (Diplotaxis tenuifolia) — perennial.

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 and university-extension sources — see References.

Soil & Growing Conditions

Water: moist but well-drained; keep well watered (RHS)

Soil pH range

5.5 7.5

Span reflects genuine variation between the cited authorities, not a single agreed figure.

Growth Stages

Stage BBCH Notes
Sowing 0 Sow seed densely at 5mm depth in full sun or part shade (RHS).
Thinning 1 Thin seedlings to 10cm (4in) apart as they emerge; keep well watered (RHS).
Leaf growth 3 Grows to around 20cm; sow successionally for a continuous leaf supply (RHS).
Cut-and-come-again harvest 8 Pick leaves over regularly, cut-and-come-again; unlike salad rocket it does not readily bolt (RHS).

Quick Facts

Factor Value
Soil pH 5.5 - 7.5
Sunlight 6-6 hours direct sun
Soil texture chalk, clay, loam or sand (RHS)
Drainage well-drained
Lifecycle perennial
Edible parts leaves, flowers

At a Glance

Diplotaxis tenuifolia Wild Rocket Downy mildew (general) Slugs Snails Flea beetles Flea beetles DISEASES PESTS

Harvest & Storage

When to pick: Pick leaves over regularly, cut-and-come-again, to keep plants from bolting and provide a continuous supply; unlike salad rocket, wild rocket is a perennial and does not bolt in the same way in warm weather. Yellow flowers are also edible and can garnish salads (RHS).

Diseases

Downy mildew (general)
low

RHS: generally disease-free, but notes cultivar 'Sele' is specifically bred for mildew resistance, implying baseline mildew susceptibility in ordinary stock.

Pests

Slugs
low

Gastropoda (slugs, various spp.)

RHS names this directly: susceptible to slugs.

Snails
low

Gastropoda (snails, various spp.)

RHS names this directly: susceptible to snails.

Flea beetles
moderate

Chrysomelidae: Alticini (various spp.)

RHS names this directly: susceptible to flea beetles.

Flea beetles
moderate

Chrysomelidae (Alticini)

RHS names this directly: susceptible to flea beetles.

References

  1. A perennial, Mediterranean leafy wild rocket to around 20cm in height, with a more peppery flavour than other varieties, smaller leaves and crunchy stalks. Yellow flowers are edible and can garnish salads. Native to Europe/Mediterranean, also native to GB/Ireland. Hardiness H3 (hardy in coastal and relatively mild UK parts, -5 to 1C). Full sun preferred, tolerates part shade. Soil: chalk, clay, loam or sand; moist but well-drained; acid, alkaline or neutral pH. Height/spread 0.1-0.5m. Time to maturity 1 year. Propagate by seed sown densely at 5mm depth; successive sowings give a continuous leaf supply; suitable for cut-and-come-again cropping. Pests: flea beetles, slugs, snails. Diseases: generally disease-free, though some cultivars such as 'Sele' offer mildew resistance -- implying mildew susceptibility exists in some cultivars.

1 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

What soil pH do wild rockets need?

A pH of about 5.5–7.5. 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 wild rockets?

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

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.

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SoilCommander Editorial Team

Canadian vegetable growing guides · Checked against provincial agriculture & university extension guidance

Every SoilCommander guide is written and maintained by our editorial team for real Canadian growing conditions, and checked against provincial agriculture and Canadian university extension guidance, and against frost-date and growing-season data, before publication.

Vegetable Growing Guides Canada

Last verified 2026-08-29

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