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Gardening in September
What to Plant in September
- Plant hardy annuals like cerinthe, ammi, scabiosa, and cornflowers for early summer blooms.
- Plant wallflowers, pansies, forget-me-nots, and other spring bedding plants in pots and borders.
- Sow hardy greens like kale, land cress, pak choi, and mustard for winter harvests.
- Plant shallot and onion sets in a sunny spot.
- Plant saffron crocus bulbs to harvest your own saffron.
Greenhouse Gardening
- Plant prepared hyacinth bulbs in pots for fragrant indoor flowers at Christmas.
- Take down greenhouse shade netting or wash off shading paint.
- Stay vigilant for pests and diseases.
- Plant dwarf spring bulbs in pots for early flowers.
- Bring tender perennials indoors before temperatures drop.
Vegetable Gardening
- Start sowing hardy varieties of broad beans and peas for next year’s crops.
- Prune out all the fruited canes of summer raspberries.
- Pot up herbs like chives and parsley for winter use.
- Cut away any leaves covering the fruits of pumpkins, squash, and marrows.
- Lift maincrop potatoes and store them in a cool, dark place.
House Plant Care
- Feed house plants once a week.
- Repot moth orchids after flowering if needed.
- Water house plants less frequently.
- Bring house plants indoors before temperatures start to drop.
- Check house plants for pests.
Garden Maintenance
- Rake thatch from lawns and re-seed bare patches.
- Put netting across ponds to prevent leaves from falling in.
- Remove algae from water features and ponds.
- Check tree ties and plant supports.
- Wash and disinfect bird feeders and tables.
- Collect fallen leaves for leaf mould.
