What to sow in London in August
In August, London averages 18 °C, with nights around 14 °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)
- Lettuce (Lactuca sativa)
- Radish (Raphanus sativus)
- Chives (Allium schoenoprasum)
- French bean (Phaseolus vulgaris)
- Spinach (Spinacia oleracea)
- Rape (Brassica napus)
- Quinoa (Chenopodium quinoa)
- Brown mustard (Brassica juncea)
- Chinese chives (Allium tuberosum)
- Coriander (Coriandrum sativum)
- Dill (Anethum graveolens)
- Arrach (Atriplex hortensis)
- Borage (Borago officinalis)
- Pot marigold (Calendula officinalis)
- Garden cress (Lepidium sativum)
- Opium Poppy (Papaver somniferum)
- Eastern purple coneflower (Echinacea purpurea)
- Nasturtium (Tropaeolum majus)
- Hemp (Cannabis sativa)
- Turnip-root chervil (Chaerophyllum bulbosum)
- Crown daisy (Glebionis coronaria)
- Aztec tobacco (Nicotiana rustica)
Sow indoors
In pots or trays somewhere warm, to plant out later.
New next month, in September
- Chervil (Anthriscus cerefolium)
- Canihua (Chenopodium pallidicaule)
- Watercress (Nasturtium officinale)
- Meadow saffron (Colchicum autumnale)
- Butterbur (Petasites hybridus)
- Bilberry (Vaccinium myrtillus)
- Red columbine (Aquilegia canadensis)
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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.