
HINTS & TIPS
JUNE
courtesy of Gardener's World magazine https://www.gardenersworld.com/what-to-do-now-june/
Flowers
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Lift and store tulip bulbs after flowering
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Give wisteria its summer prune, cutting all the long sideshoots back to 20cm, to promote flowering next spring
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Plant up a new tropical display with tender exotics, including bananas, ricinus, coleus, cannas and amaranthus
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Support tall-growing perennials, including hollyhocks and delphiniums, with a sturdy cane
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Continue planting summer bedding in pots and borders, and water regularly to help plants establish quickly
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Cut back spring-flowering perennials, such as pulmonaria, to encourage a fresh flush of foliage
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Tie in new stems of climbing and rambling roses horizontally to supports, to encourage more flowers
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Take cuttings from pinks and carnations, selecting non-flowering shoots, which should root readily
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Pinch out the tips of fuchsias and bedding plants to encourage bushier growth
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Give container displays and hanging baskets a liquid feed every few weeks to encourage flowering
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Fill any gaps in borders with pots of tall bulbs, such as fragrant lilies, to add instant colour
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Prune late-spring or early-summer shrubs after flowering, such as weigela and philadelphus, thinning out the older stems
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Add marginal plants, such as arum lilies and marsh marigolds, around the edges of your pond.
Fruit and veg
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Plant out sweetcorn after hardening off, arranging plants in blocks to aid pollination
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Cover developing and ripening fruits with netting or fleece to protect them from birds
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Enjoy the last harvests of asparagus this month, then leave the ferny top-growth to grow up over the summer
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Spread mulch around thirsty crops such as beans and courgettes to hold in moisture around their roots
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Check for woolly aphids on fruit trees, and treat infestations with soap-based spray
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Water vegetables and fruit in containers regularly, especially during dry sunny weather
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Go on regular snail hunts, especially on damp evenings, to reduce populations
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Tie in new shoots of blackberries, raspberries, loganberries and other cane fruits
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Apply tomato feed regularly to fruiting veg crops, including tomatoes, courgettes, pumpkins and chillies
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Plant up an edible hanging basket with trailing tomatoes and herbs, and keep it well watered all summer
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Rejuvenate chives by cutting the clump down to the base, for a fresh crop of new leaves in just a few weeks
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Pull out any raspberry canes sprouting up out of their dedicated area
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Take softwood cuttings of herbs such as marjoram and sage, plant in gritty compost and place on a sunny windowsill
Greenhouse
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Sow herbs in pots to grow on your kitchen windowsill, such as coriander, parsley and basil
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Plant out tender vegetables raised indoors, including beans, tomatoes, pumpkins, courgettes and sweetcorn
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Pinch out the side shoots of cordon tomatoes regularly
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Harden off hanging baskets and pots of summer bedding that have been growing in the greenhouse
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Sow biennials, including foxgloves, honesty, wallflowers and sweet rocket, in seed trays
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Water plants daily in warm weather, ideally in the evening or early morning, and avoid splashing the foliage
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Introduce biological controls to the greenhouse if you have pests such as whitefly or red spider mite
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Take softwood cuttings from hydrangeas and pelargoniums and stand the pots on a bright windowsill or in a greenhouse
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Increase greenhouse shading and ventilation to keep temperatures down on hot days
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Feed flowering and fruiting plants weekly with tomato feed
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Water greenhouse tomatoes regularly to prevent split fruits and blossom end rot
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Treat pots with vine weevil control if this pest has been a problem in the past, as larvae become active this month
Garden maintenance
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Empty, mix and refill compost bins to speed up decomposition
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Spray roses showing signs of disease, such as black spot, powdery mildew or rust
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Continue watering any new plantings until they're well established
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Water newly laid turf several times a week, for at least the first month
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Trim fast-growing hedges, such as privet, every six weeks over the summer
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Put stakes in to support tall, large-flowered dahlias and tie in stems as they grow
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Prune spring-flowering shrubs, such as kerria, choisya, chaenomeles and ribes, after flowering
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Check hedges and shrubs for nesting birds before you start any trimming or pruning, so you don't disturb them
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Remove any all-green shoots on variegated shrubs, cutting right back to their base
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Treat patio pots with vine weevil control if this pest has been a problem in the past, as larvae become active this month
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Dig out perennial weeds, such as couch grass and bindweed, as soon as you spot them
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Feed lawns with a liquid or granular lawn fertiliser
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Prune evergreen Clematis armandii if it has grown too large