What to do in the garden during September
Plant & Sow
Sow summer-flowering annuals like:
-
Tropaeolum majus (Nasturtium) -
Tanacetum parthenium (Chrysanthemum parthenium) (Feverfew) -
Helianthus annuus (Sunflower) -
Centaurea cyanus (Cornflower) -
Amaranthus tricolor (Joseph’s coat) -
Cosmos bipinnatus (Cosmos) -
Eschscholzia californica (Californian poppy) -
Alcea rosea (Common hollyhock) -
Zinnia elegans (Zinnia,) -
Scabiosa atropurpurea (Sweet scabious, pincushion flower) -
Salvia splendens (Sage, scarlet salvia)
Vegetables
For the vegetable gardener, early start in September means a longer growing season and then, of course, more veggies to eat!
Sow vegetables like:
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Allium cepa (Onions) -
Petroselinum species (Parsley) -
Solanum tuberosum (Potatoes) -
Phaseolus coccineus (Runner bean) -
Raphanus sativus (Radishes) -
Phaseolus vulgaris (Beans (dwarf/green), French beans) -
Lycopersicon esculentum (Tomatoes) -
Cucurbita pepo var. pepo (Gem squash) -
Cucurbita maxima (Pumpkins) -
Lactuca sativa (Lettuce) -
Daucus carota (Carrots)
Bulbs
Start planting summer-flowering bulbs:
-
Canna Species (Indian shot) -
Tulbaghia violacea (Wild garlic) -
Zephyranthes candida (Fairy lily, white rain lily) -
Tigridia pavonia x hybrids (Mexican shell flower, tiger flower) -
Sprekelia formosissima (Maltese cross, Aztec lily, Jacobean lily) -
Polianthes tuberosa x hybrids (Tuberose) -
Ornithogalum candicans (Berg lily, white berg lily) -
Nerine bowdenii (Giant nerine, large pink nerine) -
Merwilla plumbea (Blue squill, blue hyacinth) -
Hymenocallis narcissiflora x hybrids (Spider lily) -
Eucomis autumnalis (Pineapple lily)
Gardening Maintenance
Fertilize
Fertilize fruit trees, like:
- Ensure roses are well mulched.
- Spray apples and pears against codling moth;
- Start spraying peaches and nectarines every 10 days against fruit fly.
- Start thinning out peaches, plums, nectarines and apricots.
- Fertilize Summer-flowering bulbs and keep them moist.
Gardening maintenance
- Mow the lawn if necessary.
- Mulch the garden beds.
- Start planning the summer garden now.
- Remember to deadhead annuals and bedding plants regularly and feed every 2 weeks or so with diluted liquid fertilizer.
- Pull up spent winter annuals and vegetables and prepare the soil for new planting.
- Continue to remove weeds from lawns and pavings.
- Dead, diseased and damaged wood from deciduous trees and shrubs can be removed.









































