Keep all newly planted items well watered. This includes ones planted
last autumn.
Sow seeds of herbaceous plants.
Sow or turf new lawns and keep mowing
established ones – but not too low.
Treat difficult lawn weeds e.g. Clovers,
black medic with Lawn weed killer.
Hang up a codling moth trap in your apple
tree to reduce the number of maggoty
fruit.
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 your houseplants feed and
water them regularly.
Mid-Month
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.