September:

Sow Green Manures – Sow field beans, annual ryegrass, and phacelia. These will overwinter and can be dug into the soil next spring to improve fertility.

Turn Your Compost Heap – Regularly aerate your compost by turning it with a fork. Keep it moist if dry, and cover it to retain heat, speeding up decomposition.

Ripen and Pick Tomatoes – Encourage tomatoes to ripen by removing lower leaves from the plants. Keep harvesting to promote further growth.

Cut Down Asparagus – Asparagus foliage will begin to yellow; cut it down to about 2.5 cm above ground level.

Feed and Trim Celeriac – Feed regularly with liquid manure and remove any old or damaged leaves around the stems to encourage healthy growth.

Harvest Apples and Pears – Check fruit for ripeness and pick at the right moment. Early pears can be harvested while still firm and ripened indoors.

Sow or Plant
Cabbages – Transplant spring cabbages this month or next into their final growing positions.
Salad Crops – Sow winter lettuce, rocket, and land cress. A last batch of radishes may still yield a final crop before winter.
Onions – Plant overwintering onion sets after preparing the soil and adding an all-purpose fertilizer.
Cranberries – Plant cranberry bushes between September and November. As they require acidic soil, consider growing them in large tubs filled with ericaceous compost.
Strawberries – Plant new strawberry plants as early as possible to help them establish, ensuring a better crop next year.

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