01/09/2026
September gardening & greenhouse jobs reminder - please get in touch if you have any requirements on the points below, to secure your appointment.
Flowers
Plant wallflowers, pansies, forget-me-nots and other spring bedding in pots and borders
Collect ripe seeds from your favourite flowers and store in labelled envelopes, ready to sow in spring
Plant up containers for autumn interest, such as heathers, heucheras and other colourful bedding plants
Apply vine weevil control to pots if plants show the tell-tale sign of notched leaf margins
Fill any gaps with late-flowering perennials, such as sedums, to provide nectar for pollinating insects into autumn
Plant spring bulbs in autumn, including crocuses, daffodils, hyacinths, and bluebells in pots and borders
Take cuttings from fuchsias, salvias and pelargoniums
Keep summer bedding flowering in hanging baskets and pots until the first frosts by deadheading and feeding regularly
Trim conifer hedges to neaten them up and control height
Leave sunflower seedheads in place for birds to feed on, or harvest in readiness for next year’s planting
Greenhouse
Plant prepared hyacinth bulbs in pots or hyacinth glasses, for fragrant indoor flowers at Christmas
Take down greenhouse shade netting or wash off shading paint by the end of the month, as light levels start to fall
Stay vigilant for pests and diseases in the greenhouse, and treat any you find immediately
Pot up tender perennials, such as fuchsias, from summer displays and bring indoors before temperatures drop
Pay close attention to greenhouse ventilation, shutting vents on cool nights
Check greenhouse heaters are in good working order, and find out how to keep the heat in this winter
Maintain good plant hygiene, picking off faded blooms and dead leaves before fungal diseases can take hold
Look out for forecasts of early frosts and be ready to bring tender potted plants under cover
Move potted peaches and nectarines into a cool greenhouse or porch
Garden maintenance
Rake thatch from lawns, scarify well-trodden areas by spiking with a garden fork, and re-seed bare patches
Put netting across ponds to stop autumn leaves falling in and rotting, and keep on top of autumn pond maintenance
Water autumn-flowering asters regularly to deter mildew
Clean out water butts and check downpipe fittings in preparation for autumn rains
Remove duckw**d, pondw**d and algae from water features and ponds
Check that tree ties and plant supports are firmly in place, ahead of any autumn gales
Wash and disinfect bird feeders and tables to maintain hygiene
Collect fallen leaves to store in a leaf mould bin made of chicken-wire or bin bags to make leaf mould
Collect up and bin apples, plums and pears infected with brown rot, to reduce the spread of this fungal disease
Check roses for signs of fungal diseases, such as blackspot, and pick off and bin all affected leaves