How to plant and care for Greengage (Cambridge Gage)

Prunus domestica subsp. italica

🌳 Tree 🍓 Fruit 🔁 Perennial

A classic English greengage variety, 'Cambridge Gage' is known for its sweet, juicy, green-yellow fruit. It's a reliable cropper and self-fertile, though yields improve with a pollinator.

At a glance: harvest in August.

When to plant and care for it

JanFebMarAprMayJunJulAugSepOctNovDec

Harvest

Prune

Timed for a typical UK garden (last frost mid-April). The app uses your own town's frost dates.

Growing Greengage (Cambridge Gage): what it needs

Light: Full sun · 6+ hours a day
Watering: Regularly during establishment and dry spells
Soil: Well-draining, fertile loam · pH 6.0–7.0
Spacing: 4-6m apart
In pots: Best in the ground
Feeding: Feed in early spring with a balanced fruit tree fertilizer.
Harvest: About 90 days from sowing
Hardiness: USDA zones 5–9
Difficulty: Intermediate

Step by step

On planting day
Plant Greengage Tree
Dig a hole twice as wide as the root ball and to the same depth. Place the tree, backfill with soil, and water thoroughly.
1 day after “Plant Greengage Tree”
Stake Tree for Support
Install a sturdy stake to support the young tree, especially in windy areas. Use a flexible tie to prevent chafing.
1 day after “Stake Tree for Support”
Initial Watering & Mulching
Water deeply after planting. Apply a 5-10cm layer of organic mulch around the base, keeping it away from the trunk.
30 days after “Initial Watering & Mulching”
First Establishment Feed
Apply a slow-release, balanced fertilizer suitable for fruit trees to aid establishment.
60 days after “First Establishment Feed”
Check Tree Establishment
Monitor the tree for signs of new growth and overall health. Ensure adequate watering during dry periods.

Every year

March
Spring Feed & Mulch
Apply a balanced fruit tree fertilizer and replenish mulch around the base of the tree.
April
Spring Pest & Disease Check
Inspect for early signs of pests (e.g., aphids) or diseases (e.g., blossom wilt).
July
Summer Pruning (Plums)
Prune plum trees in summer to maintain shape, improve light penetration, and reduce risk of Silver Leaf disease.
July
Watering in Dry Spells
Ensure adequate watering during prolonged dry periods, especially when fruit is developing.
August
Harvest Greengages
Pick greengages when they are fully ripe, soft to the touch, and have developed their characteristic sweet flavor.
October
Autumn Clean-up
Clear fallen leaves and fruit from around the tree to reduce overwintering pests and diseases.
December
Winter Protection Check
Inspect tree for any damage and ensure stakes/ties are secure for winter.