autumn – Page 2 – Charlton and Blackheath Amateur Horticultural Society

The Exchange, Walnut Tree Road, Erith

One autumn Saturday morning in 2024 my companion and I visited the Sarah Price-designed garden at The Exchange in Erith, South-East London and we were in for a treat.

As Erith Library for over 100 years, and Grade II-listed, this Carnegie-financed building of 1906 finally closed its doors in 2009, thus becoming an unused space with unkept grounds. Two visionary locals, respectively with conservation and community arts experience, approached Bexley Council in 2016. Their initiative resulted in a community arts hub which opened in 2022 – a refurbished building with a new garden to match.

The garden surrounds the building on all sides, with various plantings complementing each of the four different areas. The forefront of the building has become a Mediterranean garden with a tapestry of lime-greens, blue-greens and greys. In amongst the herbaceous and shrubs I noticed Myrtle, Euphorbias, Irises, California poppies and particular favourites, sub-shrub Dorycnium hirsutum and several Hesperaloe parviflora (red yucca), a very choice succulent that I have at home (and managed to keep alive!). On our visit we noticed that flowering was just finishing, with its tall stem of red-orange pendulum flowers just going over.

October 2024 Talk: Tim Ingram on Copton Ash Garden

We welcomed back Tim Ingram who has a passion for alpines, and is a member of the Alpine Garden Society. He gave us a talk on the evolution of Copton Ash, his garden in Faversham, Kent where he also has a specialist nursery. He also brought with him a selection of alpine and perennial plants for sale. He illustrated his talk with a series of photographs showing the development of his garden over the years and seasons.

Copton Ash Getting Wild, May 2024 — Copton Ash fruit plantings Spring 1979

Tim’s garden is a large and mature family-run garden, about one and a half acres in size, which has been in existence for nearly fifty years. He comes from a family of avid gardeners and so was brought up with a keen interest in plants and gardening. His father worked at Brogdale (home of the National Fruit Collection): his mother too a keen gardener: his grandfather was into market gardening. Tim first worked in academic science in London, specialising in plant hormones. He and his wife returned full time to Copton Ash in the late 1980s when they soon started a nursery.

Horn Fair 2024

It wasn’t all that “fair” this year, in fact it was fairly wet, but we had such a great day! So many volunteers and visitors turned out to support this traditional event, thank you so much everyone. As well as a huge number of plants for sale, we also had fun with the Gargoyle Trail in the Gardens, which were specially dressed up and Haunted for the day!

Inside Charlton House there were lots of craft and artisan stalls, Frilly’s was open and there were food stalls on the back lawn. The Heritage Hub featured the Ottoman stone and some interesting watercolours of Charlton House over the years. Local community groups had stalls in the Grand Salon and St Luke’s was open for tower tours. Spotlight Dance group and the Morris Dancers were on show as well.

The Morning volunteers setting up the stalls — The Morning Volunteers

Selling frenzy in the Peace GArden — The Morning Volunteers

The gardens looked beautifully Autumnal and we had over 85 children and their families charging about looking for bats, gargoyles, pumpkins and spiders!

Highlight of the day was the Splat the Slug game, all ages had a go!

Pat’s Jobs for October 2024

1. Watch out for Cabbage White caterpillar on your Nasturtium: at our allotments they appear to be the new delicacy which they are devastating and they look like the only butterflies that are thriving.

Cabbage white caterpillars on nasturtiums

2. Make sure to plant lots of butterfly-friendly plants next year like Sweet Rocket, Scabious, Honesty and others. The butterfly count showed that butterfly numbers are very much down this year and we desperately need them. Please ask me for Honesty seeds if you want some.

Asters for Butterflies — Scabious for butterflies and bees

Plants of the Month: Salvia (October 2024)

Salvia ‘Amistad’, in less than 20 years, has become a much-loved cultivar throughout the world. and is known as the ‘friendship sage’. It was discovered in a tray of salvias at a plant sale in Argentina in 2005 by Dr Rolando Uria, and he decided to name it ‘Amistad’, meaning ‘friendship’ in Spanish.

There is much to love about this plant, in that its 1.5m high, bushy, rounded habit is ideal for planting schemes, guaranteeing a display of purple flower spires, with highly aromatic foliage, from mid-summer until the frosts in October-November. It’s not 100% hardy, so I have lost it a couple of times over the years but it’s always worth repurchasing. The young growths are adored by slugs and snails, so during wet weather in spring it can be difficult to get going.

I have noticed, however, that in London’s parks, Salvia ‘Amistad’ really thrives and can be seen growing happily and well-established in May, beneath London Planes in much drier soils, where the mature trees are protecting the plants during the winter months. And the drier soils obviously do not attract the slugs during early spring growth.

What to look out for in the Walled Gardens: October 2024

We hope you enjoy walking around the walled gardens at Charlton House!
This month, look out for:

New England Aster (Symphyotrichum novae-belgii ‘Violetta’)

Aster flowers Oct 24 , Charlton House Old Pond Garden

‘Violetta’ is a spectacular New England aster, which for a couple of months from late summer, bears a prolific display of violet-purple daisies. A naturally tall plant, it provides a regal purple splash of colour – long after many other perennials have finished flowering. Our plants are originally a donation from CABAHS member Anne.

Michaelmas daisy (Aster x frikartii ‘Monch’)

Aster x frikartii 'Monch' in the Old Pond Garden, Charlton House, September 2023

A bushy perennial with clusters of yellow-centred, lavender-blue daisies that flower right through the Autumn, it is very attractive to pollinators. One of the most reliable and popular Michaelmas daisies (so called because they flower at the time of the feast of Michaelmas on 29 September), it was bred by a Swiss nurseryman called Frikart and named ‘Monch’ after a Swiss mountain.

Autumn Flower, Fruit and Vegetable Show 2024

The 2024 Autumn Show was held on Monday 16th September in the Old Library of Charlton House. It was well attended and the standard of entry was very high – particularly given the strange growing year we’ve had.

Whole table of entries and audience awaiting decisions

Jason judged the flower classes and Melanie the vegetables but there was lots of discussion between the judges and Stella, the Chair. Anna judged the cakes and preserves, ably assisted by Annette, and Hugh weighed the potatoes. As ‘Best in Class’ winners and ‘Highly Commended’ entries were announced, the judges explained the reasons for their decisions. Finally, they agreed their choice for Best in Show.

Plant of the Month: Clematis (September 2024)

What a struggle it has been to protect the shoots of these two clematis from sustained attacks by the usual culprits this year! Not only did I use a garlic spray (one clove of garlic simmered in water) but I also liberally (and continually) sprinkled spent coffee grounds around the base of the plants. Although they were saved, I did lose other clematis: scented C ‘Betty Corning’, C ‘Rising Star’ and C ‘Wedding Day’ – all absolutely lovely and such a loss that I will need to repurchase them.

Clematis ‘Princess Diana’
This clematis is definitely one of my ‘top five’. The tulip-shaped flower is an unusual shade of bright pink, with beautifully striped markings both inside and outside of the petals (sepals). This variety (texensis) was introduced by a British breeder to honour the Princess of Wales in 1984 and has deservedly been given the RHS Award of Garden Merit.

Clematis 'Princess Diana' showing beautiful markings — Clematis ‘Princess Diana’ showing beautiful markings

Clematis 'Princess Diana' mid-September 2024 — Clematis ‘Princess Diana’ showing beautiful markings

As to be expected ‘Princess Diana’ came into flower late – in July, rather than June – and has been flowering continually, with eight flowers and a few buds on the vine at present.

Pat’s Jobs for September 2024

1. Start ordering your bulbs now as all the bulb catalogues are arriving – though prices don’t stop going up!

2. Start planting bulbs when they arrive but save your tulips until later as they are prone to virus and rotting, and to theft by squirrels.

3. Divide large established clumps of perennials by cutting back first, then splitting either by hand or with two forks back to back. Delay if soil is heavy or too wet.

Split established clumps of perennials — Order Spring Bulbs

4. Replace tired summer bedding in pots and replant for winter and replenish with fresh compost.

What to look out for in the Walled Gardens: September 2024

We hope you enjoy walking around the walled gardens at Charlton House!
This month, look out for:

Night moth Salvia (Salvia nachtvlinder)

Salvia 'Nachtvlinder' in the Old Pond Garden, Charlton House, September 2023

With velvety plum-purple flowers, this Salvia is attractive to moths and other pollinating insects and flowers over a long period – well into late Autumn.
It has deliciously blackcurrant-scented leaves and is said to protect roses against black spot when it is planted under them. A large clump is now happy in the Peace Garden.