What to Plant in August

Seeds to sow, young plants to put out, and what's flowering in August in UK gardens — drawn straight from the GardenWizz plant encyclopedia.

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🌱 Sow in August

Sow these seeds this month (10 plants).

Beetroot (Beta vulgaris)

Bracken (Pteridium aquilinum)

Chives (Allium schoenoprasum)

Coriander (Coriandrum sativum)

Cornflower (Centaurea cyanus)

Dill (Anethum graveolens)

Fern (Dryopteris filix-mas)

Onion (Allium cepa)

Potato (Solanum tuberosum)

Snapdragon (Antirrhinum majus)

🪴 Plant out in August

Put these into the garden now (24 plants).

🌸 In flower in August

What's blooming this month (64 plants).

Avens (Geum)

Basil (Ocimum basilicum)

Bramble (Rubus ulmifolius)

Buddleia (Buddleja davidii)

Carrot (Daucus carota)

Catmint (Nepeta)

Chamomile (Matricaria chamomilla)

Clematis (Clematis)

Common Rose (Rosa gallica)

Coneflower (Echinacea purpurea)

Coral Bells (Heuchera)

Cornflower (Centaurea cyanus)

Cosmos (Cosmos bipinnatus)

Courgette (Cucurbita pepo)

Dahlia (Dahlia pinnata)

Daylily (Hemerocallis)

Dill (Anethum graveolens)

Dog Rose (Rosa rugosa)

English Ivy (Hedera helix)

Fennel (Foeniculum vulgare)

Foxglove (Digitalis purpurea)

Fuchsia

Hardy Geranium (Geranium)

Heather (Calluna vulgaris)

Hebe (Hebe pinguifolia)

Honeysuckle 'Graham Thomas'

Honeysuckle (Lonicera periclymenum)

Honeysuckle 'Serotina'

Hornbeam (Carpinus betulus)

Hosta

Hydrangea (Hydrangea macrophylla)

Lavender 'Hidcote'

Lavender (Lavandula angustifolia)

Lavender 'Munstead'

Lemon Balm (Melissa officinalis)

Lettuce (Lactuca sativa)

Lupin (Lupinus)

Magnolia (Magnolia grandiflora)

Marigold (Tagetes)

Mint (Mentha)

Oregano (Origanum vulgare)

Parsley (Petroselinum crispum)

Pea (Pisum sativum)

Poppy (Papaver)

Pot Marigold (Calendula officinalis)

Privet (Ligustrum vulgare)

Pumpkin (Cucurbita maxima)

Red Campion (Silene dioica)

Rosebay Willowherb (Epilobium angustifolium)

Rosemary (Salvia rosmarinus)

Rose (Rosa)

Rudbeckia (Rudbeckia fulgida)

Runner Bean (Phaseolus coccineus)

Sage (Salvia officinalis)

Snapdragon (Antirrhinum majus)

Stonecrop (Sedum)

Strawberry 'Symphony'

Sunflower (Helianthus annuus)

Sweet Pea (Lathyrus odoratus)

Thyme 'Silver Queen'

Thyme (Thymus vulgaris)

Tomato (Solanum lycopersicum)

Wild Strawberry (Fragaria vesca)

Yarrow (Achillea millefolium)

❄️ UK frost dates by region

Approximate last spring / first autumn frost — always check your local forecast before sowing or planting out tender plants.

Region	Last spring frost	First autumn frost
Scotland & far north	late May	late September
North of England	mid May	mid October
Midlands & Wales	early–mid May	late October
East & South East England	late April–early May	late October
London & urban areas	mid April	early November
South West & coastal	mid April	November