What to do in your garden during May
In dry continental and highveld, summer-rainfall regions do the following the garden.
Plant and Sow
Annuals
Sow all summer-flowering annuals like:
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Dianthus (Carnation, Pink)
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Primula species (Cowslip, Polyanthus, Primrose)
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Alcea rosea (Common hollyhock)
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Senecio x hybrids (Florist’s cineraria, ragwort, groundsel)
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Malcolmia maritima (Virginian stock)
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Antirrhinum majus (Snapdragon)
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Digitalis purpurea (Common foxglove)
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Viola wittrockiana (Pansy)
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Verbena x hybrids (Garden verbena, Rose vervain)
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Petunia spp (Petunia)
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Papaver nudicaule (Iceland poppy)
Vegetables
Sow vegetables like:
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Petroselinum species (Parsley)
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Apium graveolens (Celery)
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Phaseolus coccineus (Runner bean)
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Lactuca sativa (Lettuce)
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Daucus carota (Carrots)
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Brassica oleracea var. capitata (Cabbages)
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Beta vulgaris var. cicla (Chard, Swiss chard)
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Allium porrum (Leeks)
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Beta vulgaris var. esculenta (Beetroot)
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Pastinaca sativa (Parsnips)
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Brassica oleracea var. botrytis (Cauliflower)
Garden Maintenance
General garden maintenance
- Stop feeding roses to prevent lush young growth from appearing; they should harden off for winter.
- Protect young and tender plants from cold winds.
- Water the lawn once a month.
- Once a week, water Azaleas, Camellias and shrubs from the winter-rainfall areas.
- Water fruit trees, vines and berries well once every three weeks.
- Plant Ranunculus and Anemone bulbs.
- Plant out container-grown trees and shrubs.
- Spray apples, pears and quinces against codling moth, and peaches against fruit fly.
- Water citrus trees well every three weeks and spray against citrus psylla; water other fruit trees thoroughly every second week.
- Keep the soil well mulched.
- Consider installing a rainwater tank. Many container-grown plants do best if watered with rainwater.
- Stake Dahlias and water and fertilize them regularly.
- Mulch roses well.
- Cut back Chrysanthemums.
- Deadhead roses regularly.
- Sow lawn seed.
- Transplant Primula seedlings.
- Prepare trenches for sweet peas.
- Feed and mulch Hydrangea, and remove the dead flowerheads from the bushes.
- Spray apricots, cherries, nectarines, peaches and plums against fruit fly; and apples, pears and quinces against codling moth.
- Water citrus trees every three weeks in dry weather, and spray with insecticide.
- Feed fruit trees after the fruit are harvested
For May maintenance tips on watering, pruning, pests and disease, fertilizing and much more visit our countrywide maintenance guide.