Summer Planting Calendar – Summer Garden Care



Summer Planting Calendar – Garden Planting and Garden Care in Summer

planting calendar summer Container-grown plants can be planted at any time of year — but what about bulbs and seeds? Which are the best months to prune, feed or mulch?

This calendar pinpoints the essential tasks of Summer and suggests plants to provide colour throughout the year.


Early Summer Planting Calendar

Lawns

Mow at least once a week. Water during dry spells.

Trees and shrubs

Remove faded azalea and rhododendron flowers. Spray honeysuckle suffering from blackfly with insecticide and spray clematis for greenfly. During dry spells water young shrubs and trees.

Roses

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.

Bulbs

Lift and divide daffodils and 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.

Fruit

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 mildew. Peg down strawberry runners. Spray raspberries with derris to control grubs; tie in new canes as they develop.

Vegetables

Sow more lettuces, radishes, spinach, carrots, peas, French beans, 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 French beans for blackfly. Plant out leeks, celery, ridge cucumbers, courgettes and marrows. Earth up main-crop potatoes.

Herbs

Sow chervil and dill outdoors.

Flower colour

Delphiniums, sweet Williams, Canterbury bells, lupins, bearded irises, alliums, stock, pinks, peonies, roses, honeysuckle, potentilla, rock roses, lilac.


Mid Summer Planting Calendar

Lawns

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 climbing plants. Continue pruning shrubs as they finish flowering.

Roses

Dead-head hybrid tea and floribunda roses to encourage autumn flowering. Apply’ fertilizer. Treat for mildew and aphids if necessary.

Perennials

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.

Biennials

Remove plants when flowering has finished.

Bulbs

Plant autumn-flowering bulbs: 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 soil level; spray for grubs. Spray strawberries which have finished fruiting with insecticide; clear away the straw or black plastic sheeting from around the plants.

Vegetables

Continue with successive planting of lettuces, radishes, spinach, French beans, broccoli, turnips, carrots and peas. Lift shallots and ripen on paving or a path before storing. Dig early potatoes. Feed onions. Feed tomatoes 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 tomatoes.

Herbs

Sow parsley in seed beds outdoors.

Flower colour

Sweet peas, nasturtiums, phlox, petunias, lavender, snapdragons, roses, clematis hybrids, hydrangea, hollyhocks.


Late Summer Planting Calendar

Lawns

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.

Roses

Prune ramblers after flowering. Continue to spray against mildew and watch out for and pull up suckers.

Perennials

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. Keep chrysanthemums well supported and tied in; continue to disbud. Annuals Dead-head regularly and water well during dry spells.

Biennials

Dead-head regularly and water well. Remove plants that have finished flowering.

Bulbs

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.

Fruit

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.

Vegetables

As you harvest your vegetable crops, 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 greenhouses to eradicate pests and diseases.

Flower colour

Early flowering chrysanthemums, begonias, heleniums, marigolds, lobelia, sunflowers, lilies, gladioli, hibiscus, fuchsias, heathers, buddleias, St John’s wort.

Spring Planting Calendar

Autumn Planting Calendar

Winter Planting Calendar

14. November 2010 by Dave Pinkney
Categories: Garden Management, Plant Care | Tags: , , | Comments Off on Summer Planting Calendar – Summer Garden Care

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