How to Grow Edamame (Soybean) Canada

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

On this page
  1. Edamame (Soybean) (Glycine max)
  2. At a Glance
  3. Quick Facts
  4. Soil & Growing Conditions
  5. Growth Stages
  6. Harvest & Storage
  7. Diseases
  8. Pests
  9. Plan your Edamame (Soybean) planting
  10. Growing Edamame (Soybean) in another region
  11. Sources
  12. Frequently Asked Questions

Edamame (soybean) (Glycine max) — annual.

The short answer

Site
6+ hours of sun, soil pH 6–7
Biggest risk
Downy mildew

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

Edamame (Soybean) (Glycine max)

A field of edamame (soybean) plants — “Champ de soja” by Renhour48 is licensed under CC0.

8 sources cited · Verified

At a Glance

A field of edamame (soybean) plants
A field of edamame (soybean) plants. Photo by Renhour48, CC0.
Glycine max Edamame (Soybean) Downy mildew (general) Powdery mildew Aphids Slugs Snails DISEASES PESTS

Quick Facts

A plate of boiled, salted edamame pods
A plate of boiled, salted edamame pods. Photo: “Edamame by Augapfel” by Augapfel, CC BY 2.0.
Factor Value
Soil pH 6 - 7
Sunlight 6-6 hours direct sun
Optimal growing temp 20-30°C
Drainage Light, free-draining
Lifecycle annual
Edible parts seeds (pods)

Soil & Growing Conditions

A row of edamame plants in a misty field
A row of edamame plants in a misty field. Photo: “Closeup of Soybean Leaves (10060039074)” by United Soybean Board, CC BY 2.0.

Soil pH range

6 7

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

Growth Stages

Close-up of edamame leaves
Close-up of edamame leaves. Photo: “Closeup of Soybean Leaves (10060033614)” by United Soybean Board, CC BY 2.0.
Stage BBCH Notes
Sowing and germination 0 Sow 5cm deep, indoors April-May at 18-20°C in a propagator, or outdoors May-June once soil reaches 15°C, spaced 15cm apart in rows 45cm apart (RHS).
Hardening off and establishment 1 Harden off indoor-raised seedlings before planting out in early summer; most UK varieties reach about 60cm and are self-supporting, though windy sites may need canes and string (RHS).
Flowering and pod set 6 Water regularly in dry spells, especially once flowering and forming pods -- soya beans are thirsty plants; mulch to retain moisture (RHS).
Pod filling and harvest 8 Harvest edamame in summer while pods are still green with plump beans inside; for dry mature beans, leave on the plant until late September as leaves start to fall (RHS).

Harvest & Storage

A plate of boiled, salted edamame pods
A plate of boiled, salted edamame pods. Photo: “Edamame by Augapfel” by Augapfel, CC BY 2.0.

When to pick: RHS: edamame harvest when "pods are still green, with plump green beans inside" (summer); for dried beans, harvest "from late September, when the leaves start to fall from the plants, often leaving just brown stems with lots of hanging pods". NC State: for edamame, "harvest the pods when the seeds are plump and the pod is just beginning to lose its fresh green color"; for dried beans, "allow the pods to mature and dry on the plant".

Storage

Edamame best used fresh; dried beans stored long-term

Diseases

Detail of an edamame leaf's veins
Detail of an edamame leaf's veins. Photo: “Closeup of Soybean Leaves (10060065895)” by United Soybean Board, CC BY 2.0.
Downy mildew (general)

Pests

Detail of an edamame leaf's veins
Detail of an edamame leaf's veins. Photo: “Closeup of Soybean Leaves (10060065895)” by United Soybean Board, CC BY 2.0.

Aphididae (various spp.)

Slugs

Gastropoda (slugs, various spp.)

Snails

Gastropoda (snails, various spp.)

Plan your Edamame (Soybean) planting

When to sow and plant Edamame (Soybean) 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 Edamame (Soybean) 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 8 sources behind this guide (FAO EcoCrop, GBIF, NC State Extension and others) is in the references of our UK guide to edamame (soybean); they describe the plant itself, which is the same wherever it grows.

Frequently Asked Questions

What soil pH does edamame (soybean) need?

A pH of about 6–7. 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 edamame (soybean)?

Our data links 2 diseases 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.

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Last verified 2026-09-02

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