September Meeting | Mark Gregory - 'The RHS Chelsea Flower Show: A Life's Work' | Tuesday 8th September, 8pm
A little bit of rain at the end of August managed to break the almost relentless heat and dry weather of June, July and August, but the rain has only penetrated a few millimetres - a lot more is needed before any of the trees, shrubs, and perennials can have a chance to recover before winter. Although the days are shortening and nights are getting cooler, we are far from finished with the gardening year and there is still much to enjoy in the garden and out in our outdoor spaces; perhaps with a nice cup of tea and a copy of the new Worplesdon Garden Club September Newsletter.
Keep late flowering annuals and perennials flowering until the first frosts by regular deadheading
Take cuttings of most half-hardy or tender perennials such as fuchsias, salvias and pelargoniums, as well as semi-ripe cuttings of woody shrubs such as rosemary and lavender
As early flowering annuals begin to fade, choose a warm, dry day to collect seed and store in paper envelopes or pouches made from folded kitchen paper
Fill in any gaps in the garden with spring bedding such as pansies, forget-me-nots and bellis
Spring-flowering bulbs can also be planted from now until the end of November
In the vegetable garden, continue to pick beans, peas, tomatoes, courgettes, and cucumbers to continue your supply
Sow spinach, winter lettuce, kale, and some oriental vegetables, either direct in the vegetable garden or under cover for planting out next month
Winter onions, garlic (hardneck), and spring cabbage can be planted now, but not in the same location as the previous crop - ideally, rotate vegetable beds on a three- or four-year cycle: Onions and Roots > Potatoes > Brassicas > Legumes
Annual herbs can also be sown now then brought inside to provide a supply in early winter
Remove the growing top of tomato plants to encourage the ripening of existing trusses and remove lower leaves to allow in more light
Onion sets of varieties suitable for over-wintering, hardneck garlic, and spring cabbage can be planted out now
The fruited canes of Summer-fruiting raspberries should be cut out now. These raspberries will bear fruit next year on the new, green stems that have grown this summer, so don’t remove these! Autumn-fruiting raspberries fruit on the new season’s growth and should not be cut down until late winter
Many hardy annuals such as cornflower, Ammi, and sweet peas can also be sown now for an early display next summer, or perhaps sow a patch of wildflowers, but choose the right seed mix for your soil type and aspect (light, moisture, etc.)
Early autumn is a beautiful time of the year were the low sun in the evenings cast a red, rosy glow over the garden, so make sure you take the time to enjoy your garden or nearby open spaces
Jobs to do only if there has been enough rain for plants to recover from some of the drought shock of summer:
September and October are perfect times to divide congested clumps of many perennials after they have finished flowering. Dig up, divide, replant, and water-in well. The warmth of the soil will mean they will re-establish quickly. If the clump is very large it is usually best to only take new plants from the edge and discard the older, woody centre
Lawns may need some autumn maintenance. Scarify to remove thatch, aerate, and apply a lawn feed suitable for autumn application (low nitrogen, high potassium) as well as addressing weeds with selective herbicides if required. New areas of grass should be sown now, or thin areas of lawn raked and overseeded
Evergreen hedges can have a final trim before winter but ensure that this is done well before any frosts or cold weather.
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Coleus scutellarioides 'Wizard Scarlet'
Miscanthus sinensis 'Kaskade'
Rosa 'Cariad'
Coleus scutellarioides 'Urban Mix'
Cotinus coggygria 'Kanari', Smoke Bush
Hylotelephium 'Red Cauli', Sedum
Coleus scutellarioides 'Trusty Rusty'
Dahlia 'Spartacus'
Senecio candidans 'Angel Wings'
Rudbeckia hirta 'Cappuccino'
Hibiscus moscheutos 'Planet Griotte'
Coleus scutellarioides 'Royalty'
Thunbergia alata 'Sunny Susy Yellow Dark Eye'
Dahlia 'Firepot'
Stipa gigantea
Tithonia rotundifolia 'Torch'
Rudbeckia fulgida var. sullivantii 'Goldsturm'
Lagerstroemia indica 'Victor', Crape Myrtle
Tomato 'Roma'
Dahlia 'Aljo'
Verbena × baileyana 'Purple Haze'
Gazania rigens 'Sunshine Mixed'
Dahlia 'Shannon'
Aster 'Spider Chrysanthemum', Callistephus chinensis
Eucomis bicolour
Chilli
Kniphofia rooperi
Ipomoea purpurea 'Heavenly Blue', Morning Glory
Zinnia elegans 'Envy'
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Part Anagram; Part Crossword. The answers to all the short clues are shorter-word anagrams of the long starter word, and there's even some clues to help you complete it! The answers are at the bottom of the page.
The genus Agastache, the Giant Hyssops, is a genus of aromatic flowering herbaceous perennial plants in the family Lamiaceae. It contains 22 species, mainly native to North America. They like full sun with well-draining soil and hate winter wet as they rot easily in cold, damp soil. The taller herbaceous forms have mainly violet-blue flowers, while the shorter, woody forms are often yellow, pink, or apricot. The woody forms are borderline hardy and are often best grown as an annual.
There are many events at RHS Wisley including the Annual National Dahlia Society Show at the RHS Garden Wisley Flower Show, 1st to 6th September (access to the Dahlia show from the 2nd only).
There are several gardens open as part of the National Garden Scheme, including West Horsley Place, KT24 6AN, 13th September, 10am-4pm.
You can also view the latest newsletter from the Surrey Horticultural Federation and other news on their website.
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