UK monthly planting calendar

Choose a month for a UK planting checklist and live greenhouse availability.

Plants on the calendar

• Coleus: A houseplant all year that can summer outside once frosts are over. Bring it back in before nights drop below about 10°C.
• Tradescantia, Callisia and inchplants: Indoor trailing plants that can be potted up any month. Pinch and root the tips in spring and summer for bushier pots.
• Kalanchoe and Mother of Thousands: Succulent houseplants for a bright windowsill all year. Keep them on the dry side in winter. Toxic to pets.
• Cacti and trailing succulents: Pot up any month in gritty compost. Water sparingly from November to February while growth rests.
• Terrarium and foliage houseplants: Indoor and terrarium plants that can be planted any month. Keep them out of cold draughts and hot radiators in winter.
• English ivy: Hardy, so it can live indoors or go outside in spring or early autumn.
• Angel Wings (Senecio): Silver foliage for sunny patios once frosts are over. Give it shelter or bring it in for winter.
• Tomatoes: Tender. Plant in a greenhouse from April or outside once the last frost has passed.
• Cucumbers and cucamelons: Tender and frost-sensitive. Grow on under cover until June, or keep in a greenhouse.
• Melons and watermelons: Needs warmth. A greenhouse or sunny sheltered spot gives the best crops.
• Courgettes: Plant outside after the last frost. Pick often to keep the crop coming.
• Squash and pumpkins: Tender. Plant into rich soil once frosts are over and cure the fruit in the sun before storing.
• Runner beans: Tender. Plant at the foot of canes after the last frost.
• French, climbing and yard-long beans: Tender. Plant out after the last frost. Yard-long beans do best in a greenhouse.
• Broad beans: Hardy. Can go outside in early spring.
• Peas and mangetout: Hardy. Plant out in spring with twiggy supports.
• Kohlrabi: Hardy. Harvest when the swollen stems are tennis-ball sized.
• Leafy greens and brassicas: Hardy, cut-and-come-again leaves. Late summer plantings crop into autumn.
• Sunflowers: Plant out after the last frost in full sun. Stake the tall varieties.
• French marigolds: Tender bedding. Plant after the last frost. A good companion for tomatoes.
• Calendula (pot marigold): Hardy annual. Deadhead to keep the flowers coming.
• Cosmos: Tender annual. Plant after the last frost in a sunny spot.
• Cornflowers: Hardy and loved by pollinators. Plant out in spring.
• Borage: Hardy annual with edible blue flowers. Often self-seeds.
• Nasturtiums: Tender. Plant after the last frost. Flowers best in poor soil.
• Balloon vine: Tender climber. Plant against a warm, sunny support in June.

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