Things to be doing in the garden early September...

By John Brennan, 11/09/2020

Things to be doing in the garden early September...

Things to be doing in the garden early September...

• Water camellias and rhododendrons thoroughly this month to make sure that next year's buds develop well.

• Keep patio container plants well watered and feed with a liquid fertiliser every fortnight.

• Stake tall or top-heavy dahlias and lilies to prevent wind and rain damage.

• Dead-head bedding plants and perennials to encourage them to flower into the autumn and stop them self-seeding.

• Cut back faded perennials to keep borders tidy.

• Dead-head lilies for a better flower display next year.

• As penstemon flowers fade, cut them back to just above a leaf to encourage more flowers.

• Cut back herbs now to encourage a new flush of tasty leaves you can harvest before the frost.

• Prune wisteria after flowering by removing all the whippy side-shoots from the main branch framework to about 20cm from their base (about five leaves from the main stem).

• Trim any lavender plants after they've finished flowering to keep them compact.

• Collect ripened seed and store for next year. Leaving some seed heads in place can be attractive and allows the plant to self-seed in the surrounding soil.

• Mow wildflower meadows now to help scatter the seeds.

• Take cuttings of your favourite tender perennials such as pelargoniums and fuchsia to propagate them for next year.

• Finish dividing clumps of bearded Iris now so they have time to form roots and flower buds for next year before the cold weather arrives.

• Prune climbing roses and rambling roses once they've finished flowering (unless they’re repeat-flowerers in which case leave them).

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