What to sow in London in June
In June, London averages 16 °C, with nights around 12 °C.
Frosty nights are usual from November to March: the last frost typically comes in March.
A typical winter's coldest night: −3 °C.
Warm months (15 °C or more on average): June to September.
Sow outdoors
- Onion (Allium cepa)
- Beet (Beta vulgaris)
- Endive (Cichorium endivia)
- Lettuce (Lactuca sativa)
- Pepper (Capsicum annuum)
- Welsh onion (Allium fistulosum)
- Chives (Allium schoenoprasum)
- Cucumber (Cucumis sativus)
- Courgette (Cucurbita pepo)
- French bean (Phaseolus vulgaris)
- Pea (Pisum sativum)
- Spinach (Spinacia oleracea)
- Broad Bean (Vicia faba)
- Turnip (Brassica rapa)
- Corn (Zea mays)
- Leek (Allium ampeloprasum)
- Rape (Brassica napus)
- Sweet basil (Ocimum basilicum)
- Brown mustard (Brassica juncea)
- Chinese chives (Allium tuberosum)
- Coriander (Coriandrum sativum)
- Sunflower (Helianthus annuus)
- Purslane (Portulaca oleracea)
- Oregano (Origanum vulgare)
Sow indoors
In pots or trays somewhere warm, to plant out later.
- Radish (Raphanus sativus)
- Prince's-feather (Amaranthus hypochondriacus)
- New Zealand spinach (Tetragonia tetragonioides)
- German chamomile (Matricaria chamomilla)
- Common Poppy (Papaver rhoeas)
- Snapdragon (Antirrhinum majus)
- Sulphur cosmos (Cosmos sulphureus)
- Aztec tobacco (Nicotiana rustica)
- Garden leek (Allium porrum)
- Amaranth (Amaranthus sp.)
- Cape aloe (Aloe ferox)
- Niger (Guizotia abyssinica)
- Musk okra (Abelmoschus moschatus)
- Hairy beggarticks (Bidens pilosa)
- Yellow bells (Tecoma stans)
- Bear's breech (Acanthus mollis)
- Roostertree (Calotropis procera)
- Spider flower (Gynandropsis gynandra)
- Pepper bark tree (Warburgia ugandensis)
- Arad (Albizia amara)
- Water chestnut (Trapa natans)
- Acanthosicyos horridus
- Blue wood aster (Symphyotrichum cordifolium)
- Romerillo (Bidens alba)
New next month, in July
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Month by month
Worked out from the last ten years of London's climate and each plant's needs: germination temperature, frost limit and time to harvest.