Fruits, Vegetables, Herbs

Pac choi

Brassica rapa 'Joi Choi'

Joi Choi is a semi-upright pak choi with dark green leaves and thick white stalks for the vegetable garden. It generally reaches about 12–18 inches tall, and plants can be spaced about 10–12 inches apart for full-size heads. Give it sun to partial shade and fertile, moist, well-drained soil. Harvest is estimated at about 50–55 days from direct seeding; the cultivar is also described as relatively slow to bolt. In Southwest Washington, treat that timing as an estimate rather than a fixed planting schedule. Check young leaves for flea beetle holes and protect roots where cabbage maggots previously occurred.

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At a glance

Mature height
About 12–18 in.
Mature spread
Not established; space 10–12 in. apart
Light
Sun to partial shade
Hardiness
Grow as a seasonal vegetable

The right plant, the right place

Make room for something good.

Grow Joi Choi in a vegetable bed for its edible leaves and thick white stalks. Its semi-upright habit makes the developing heads easy to check as they grow.

Where to plant

Set plants in sun to partial shade and allow about 10–12 inches between them for full-size heads. The crop can reach about 12–18 inches tall.

Through the seasons

Joi Choi has dark green leaves and white stalks at harvest. It is described as relatively slow to bolt, though the harvest date remains approximate.

Southwest Washington gardens

Give it a good start.

Use the stated harvest time as an estimate in Southwest Washington. Watch for flea beetles on seedlings and cabbage maggot damage around roots and underground stems.

Soil, drainage & water

Choose fertile, moist, well-drained soil. Keep moisture available as the heads develop while allowing excess water to drain.

A little care goes a long way

Growing well, season after season.

Allow roughly 50–55 days from direct seeding to harvest, adjusting expectations for growing conditions. Check young leaves for flea beetle holes and respond early to damage.

Know what to look for

Common growing concerns.

Symptoms can have more than one cause. These notes are a starting point for observing your plant and improving its growing conditions.

Flea beetles

Small, round holes in leaves, especially on young plants.

Help your plant thrive

Clear weeds from the garden and adjacent areas that may attract flea beetles.

Cabbage maggot

Tunnels in roots or underground stems, followed by yellowing, stunting or wilting.

Help your plant thrive

Cover crops before adult flies emerge. If maggots were present last year, choose another site; row covers over infested soil may trap emerging flies.

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