Black Beauty
A reliable green courgette with good cropping and a classic straight fruit shape.
When to plant Courgettes in Glasgow
Cucurbita pepo
A tender summer crop for the UK. Sow indoors in warmth, plant out after the last frost into rich, moisture-retentive soil, and keep picking young fruits to keep plants productive.
60 cm · Full Sun · High Water
Calibrated to Glasgow · last frost ≈ 25 Apr
| Activity | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow indoors | No | No | No | Yes | Yes | No | No | No | No | No | No | No |
| Plant out | No | No | No | No | No | Yes | No | No | No | No | No | No |
| Harvest | No | No | No | No | No | No | Yes | Yes | Yes | Yes | No | No |
Growing guide
What to do through the growing season
01
Sow Seeds Indoors
25 Apr to 2 MaySow one seed on its edge in a small pot of warm compost around 25th April - 2nd May. Keep the compost just moist and do not sow earlier, because seedlings grow fast and can become root-bound if left too long.
02
Pot On Seedlings
9 May to 30 May Dates as each sowing reaches this stageWhen the first true leaves are formed, move each seedling into a larger pot so roots have room to develop. Handle them gently and keep them in good light from 9th May to 30th May.
03
Harden Off Plants
23 May to 6 JunAcclimatise plants outdoors from 23rd May to 6th June. Start in a sheltered spot by day and bring them in at night, then leave them out longer each day until they cope with full outdoor conditions.
04
Transplant Outdoors
6 Jun to 20 JunPlant into rich soil around 6th June - 20th June, once frost risk has passed and the soil is warm. Water in, keep the stem base slightly raised, and space plants apart.
05
Water and Feed
11 Jul to 25 Oct Dates as each sowing reaches this stage Optional · repeat every 2 weeksFrom 11th July to 25th October, keep the soil moist by watering at the base. Once the first fruits swell, feed container plants with a high-potassium liquid fertiliser every 14 days. Plants in rich ground rarely need routine feeding.
06
Harvest Courgettes
11 Jul to 11 Oct Dates as each sowing reaches this stage Optional · repeat every 3 daysCut courgettes from 11th July to 11th October while they are long and still tender. Pick every few days to keep the plant producing.
Suggested varieties
Popular varieties of Courgette to consider
Defender
A popular early, productive hybrid that crops well in UK summers.
Tondo di Piacenza
A round-fruited type that’s handy for stuffing or small harvests.
Astra Polka
A pale-skinned variety with attractive mottling and steady yields.
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