Summer Planting Calendar – Summer Garden Care
Summer Planting Calendar – Garden Planting and Garden Care in Summer
This calendar pinpoints the essential tasks of Summer and suggests plants to provide colour throughout the year.
Early Summer Planting Calendar
Mow at least once a week. Water during dry spells.
Trees and shrubs
Remove faded azalea and rhododendron. Spray honeysuckle suffering from blackfly with insecticide and spray clematis for greenfly. During dry spells water young shrubs and trees.
Remove suckers growing from rootstocks. Spray against greenfly and diseases with combined fungicide/insecticide. Perennials When finished, cut down early flowering species to 7.5cm (3in) above ground. Annuals Support tall annuals Sow late summer-flowering annuals such as candy-tuft, cornflowers and marigolds. Plant bedding plants, using them to fill window-boxes, hanging baskets and outdoor containers, as well as gaps in borders. Water sweet peas. Biennials Continue to sow spring-flowering biennials- forget-me-nots, wallflowers, Canterbury bells and sweet Williams.
Lift and divideand tulips when leaves start to yellow. In mild areas plant De Caen anemones for the autumn. On dahlias pinch out tips of leading shoots, then water, mulch and spray against pests. Cut back stems of tall bearded irises after flowering; if overcrowded, lift and divide.
Thin apple tree crop after natural early summer drop. Also thin pears and plums Spray plum and cherry trees with insecticide. Rub out shoots of fan-trained sweet cherries which are growing towards or away from the wall. Cover soft fruit bushes with netting against birds. Spray gooseberries against. Peg down strawberry . Spray raspberries with derris to control grubs; tie in new canes as they develop.
Sow more lettuces, radishes, spinach, carrots, peas,, broccoli, cabbages, swedes and turnips. Sow one more crop of runner beans for a late harvest. Water seedlings planted previous month and spray against blackfly; also spray early crop for blackfly. Plant out leeks, celery, ridge , and . Earth up main-crop potatoes.
Sow chervil and dill outdoors.
Delphiniums, sweet Williams, Canterbury bells, lupins, bearded irises, alliums, stock, pinks,, , honeysuckle, potentilla, rock roses, lilac.
Mid Summer Planting Calendar
Water in dry spells, and treat areas growing badly. Mow at least once a week. Trees and shrubs Keep young shrubs and trees well watered. Train the new growth on. Continue shrubs as they finish flowering.
Dead-head hybrid tea andto encourage autumn flowering. Apply’ fertilizer. Treat for and aphids if necessary.
Water thoroughly. For large chrysanthemum blooms reduce stems to six or eight per plant. Disbud. Feed with fertilizer. Annuals Remove faded flower heads. Support tall annuals. Frequently water plants in window-boxes, hanging baskets and other containers.
Remove plants when flowering has finished.
Plant autumn-: nerines, Sternbergia lutea, colchicums and autumn-flowering crocus. Tie in young shoots of dahlias and remove faded flowers; feed with general fertilizer and stake taller varieties. Lift, divide and replant dwarf and intermediate bearded irises at beginning of month and tall bearded irises at end of month; water until divisions are established. Fruit Prune plum trees, and trained pears and apples. Pinch out tips of fan-trained sweet cherry trees. Spray apple trees against codling moth. Cut back raspberry canes which have finished fruiting to just above level; spray for grubs. Spray which have finished fruiting with insecticide; clear away the straw or black plastic sheeting from around the plants.
Continue with successive planting of lettuces, radishes, spinach, French beans, broccoli, turnips, carrots and peas. Lift shallots and ripen onor a path before storing. Dig early potatoes. Feed onions. Feed with liquid fertilizer when the first fruits form and pinch out side shoots. Spray runner beans with insecticide against aphids and water really well to encourage flowers to set. Water celery, leeks, cucumbers, courgettes, marrows, beans and .
Sow parsley in seed beds outdoors.
Sweet peas, nasturtiums, phlox, petunias, lavender, snapdragons, roses, clematis hybrids, hydrangea, hollyhocks.
Late Summer Planting Calendar
Mow regularly, water during dry spells. Apply weedkiller and lawn fertilizer. Trees and shrubs Keep soil around shrubs and trees well watered. Clip lavender bushes after flowering. Cut back wisteria.
Prune ramblers after flowering. Continue to spray against mildew and watch out for and pull up suckers.
Make sure perennials never dry out, particularly autumn-flowering species such as Michaelmas daisies, golden rod and heleniums Dead-head all faded flowers not needed for their seeds. Keepwell supported and tied in; continue to disbud. Annuals Dead-head regularly and water well during dry spells.
Dead-head regularly and water well. Remove plants that have finished flowering.
Plant crocus corms as soon as available from stockists; replant any established bulbs previously moved to make room for annuals in the position you want them to flower. Continue to dead-head and tie in dahlias; rub out young buds on side shoots.
Continue summer pruning of trained apple and pear trees. Prune peach trees after fruiting and tie in replacement shoots. Plant new strawberry plants, and plant runners from established plants. Continue to cut back raspberry canes after fruiting to just above soil level; support new canes and sprinkle fertilizer on surrounding soil. Prune black currant bushes.
As you harvest your, prepare the ground for more cultivation. It is still possible to sow lettuces, radishes, spinach and turnips. Sow onions and carrots — to be covered with cloches later — for harvesting in winter. Early in the month sow spring cabbages and winter greens. Feed Brussels sprouts with general fertilizer. Water runner beans, spray them against blackfly and give them a liquid feed. Spray brassicas against cabbage white caterpillars and aphids. Earth up trench-blanching celery. Start lifting maincrop potatoes. Fumigate to eradicate pests and diseases.
Early flowering chrysanthemums, begonias, heleniums, marigolds, lobelia, sunflowers,, gladioli, , , heathers, buddleias, St John’s wort.