As the beginning of summer greets us in May we can look forward to a flourish of colour in the garden over the months ahead!

These May gardening tips offer a quick checklist of gardening jobs that will help prolong that flourish of colour and prepare the foundation for a healthy garden and happy gardener!

Early May

Keep all newly planted items well watered. This includes ones planted last autumn.

Sow herbaceous plant seeds for next years flowering season

Sow or turf new lawns (not during period of drought) and keep mowing established ones – but not too low.

Treat difficult lawn weeds e.g. clovers, black medic with lawn weed killer.

Plant out cabbage, cauliflower and other brassicas but take precautions against root fly.

Keep on top of pest and disease outbreaks, as well as controlling weeds.

Don’t forget to feed your houseplants and water them regularly.

Mid May

Sow suitable varieties of pansies to flower from autumn throughout the winter.

Sow biennials for flowering next spring onwards e.g. wallflowers, mysotis, sweet williams, foxgloves and honesty.

Plant out chrysanthemums for flowering in borders or for cutting.

Plant out summer bedding plants when frost risk is minimal.

Tie in wallshrubs and climbers to their supports.

Prune wall trained pyracantha and chaenomeles after flowering.

Keep strawberry fruits off the soil using straw or mats.

Cut down spring flowering perennials after flowering to produce a neat mound of new foliage. Untrimmed plants often become mildewed.

Sow swedes, beetroot, carrots, parsnips, french and runner beans outdoors.

Plant out sweet corn in blocks, rather than a long row, as they are wind pollinated.
Take cuttings from dahlias and chrysanthemums for flowering later in summer.

Plant tomatoes, peppers, aubergines, cucumbers etc. in a cold greenhouse.

Make up summer flowering hanging baskets and containers. Treat them with Bio Provado Vine Weevil Killer 2 as a precautionary measure. Control lasts 4 months.

Late May

Prune clematis montana straight after flowering if they are getting out of bounds.

Plant out leeks, marrows, courgettes and melon plants.

Spinach often runs to seed if sown after mid May – so sow leaf beet instead.

Sow some half-hardy annuals for use a winter pot plants e.g. calceolarias, schizanthus and cinnerarias.

Sow ornamental cabbage and kale for winter colour in tubs and borders.

Beware of houseplants getting scorched on sunny windowsills.

Listen to the weather forecast in case of any nasty late frosts.


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