May – Page 2 – Charlton and Blackheath Amateur Horticultural Society

What to look out for in the Old Pond Garden May 2025

Geranium pyrenaicum ‘Bill Wallis’

A member of the hedgerow cranesbill family, seen commonly in roadside verges – but what a star! It was named after Mr Bill Wallis, a passionate plantsman, who chanced upon the original seedling sporting electric violet flowers instead of the common pink hue. It is a low sprawling perennial which shows its vivid purple flowers from late Spring until late Autumn. Lovely ground cover for sun or shade. Resistant to drought and avoided by snails – what’s not to like!

Tiarella ‘Spring Symphony’ – Foam Flower

Enjoy a symphony of colour with this extraordinary Tiarella! A charming, shade loving relative of the Heuchera. In spring, slender stems rise above the leaves and hold a mass of pink and white starry flowers, giving a frothy effect – hence the common name the Foam Flower.

This variety has an Award of Garden Merit from the RHS and it copes in the difficult dry shade conditions under the Lime trees in the Old Pond Garden.

May 2024 Talk: Silent Earth – Averting the Insect Apocalypse

Dave Goulson, Professor of Biological Sciences at the University of Sussex specialising in the ecology and conservation of insects, and author of several books*, gave a talk about the dramatic insect decline worldwide. He outlined some of actions required on a National and International scale to reverse this apocalypse and what we as gardeners can do.

Dave Goulson with our Chair, Stella and the range of his books for sale at the meeting

When he was a boy, he started collecting caterpillars (in his lunchbox) and his interest in insects became a life long passion when one of them pupated into a Cinnabar Moth. He explained that insects evolved over 480 million years ago and there are now around one million known species worldwide. They were the first creatures to fly and sing and many have complex inventive ways to camouflage themselves or mimic others. Examples of some ‘weird and wonderful’ insects were shared with us such as the Shield Bug from Thailand whose back very much looks like the face of Elvis.

The horrifying statistics on insect decline were shown, particularly over the last 30 to 40 years. Studies show that the decline is around 75%. He has researched the Shrill Carder Bee which was common across Southern England pre-1960 but by the year 2000 the populations of this bee had greatly decreased and there were only about six populations left. Since 2000, the population which inhabited the Salisbury Levels has become extinct.

King John’s Nursery and Garden, Etchingham, Sussex

On a gloriously sunny day in May, a visit was paid to the garden at King John’s Nursery. This ‘naturalistic’ garden is set within a beautiful landscape of ancient trees and meadows. We were given a laminated map of the garden layout and proceeded through the old honeysuckle-clad, wrought-iron gate to the garden beyond. This led us to the first garden room, beautifully planted in soft-pinks, the focal point being a circular, brick-built pond, fed by an imaginative water-gully. This led us into the gravel garden room, consisting of sun-loving and tender plants displayed to great effect on a slab-table, an artefact that many of us would love to possess for our own gardens!

Honeysuckle-clad wrought iron gate entrance to the garden

First garden room, planted with soft-pink flowers — Honeysuckle-clad wrought iron gate entrance to the garden

From there we entered a magical place – a charming meadow with mauve-blue spires of camassias threading through and rising above the grasses, a stunning contrast to the shades of green all around. White-flowered camassias were in bud, ready to take over and bloom in the next week or so. In one corner of the meadow sat a toadstool circle, an enchanting addition for children to let their imaginations run wild. We exit beneath the clipped hedge archway into a larger meadow which includes an herbaceous long border, consisting of many taller plants such as grasses and flowering angelica. We follow the path around, to a shaded woodland dell and admire the luminosity of the rhododendron’s stunning white flowers by a gateway entrance, cow-parsley billowing alongside solomon’s seal and pass beneath the 350-year-old oak tree. Amongst the grasses, glistening in the sun, wild orchids are to be admired. We sat on the bench to absorb the idyllic setting before us, noticing glimpses of an old apple orchard beyond the boundary.

May Plant Sales 2024

May is the month for plant sales! We held two this year, our big annual one was held at Charlton House on Saturday May 18th, along with the Blackheath & Greenwich WI and a select group of other market stalls. The plants were all set out in the Peace Garden which is not only a lovely setting but also meant we didn’t have to carry them too far! Visitors started queueing outside the gates before we opened at 10, aiming for a bargain and a bit of horticultural conversation.

People buying plants — Peace Garden 10.05 am

Queue to buy plants — Peace Garden 10.05 am

Our plants had mostly sold out by 12.30, which was a bit sad for latecomers. But volunteers were on hand to chat about the gardens and Stella presented her findings about the history of the garden in the Old Library.

We also had a “Bugs in the Beds” trail for the little ones and Frilly’s was open all day.

Plant of the Month: Iris (May 2024)

The show gardens at the Chelsea Flower Show each May just zing with the stunning colours of the irises in bloom and they really are one of the main attractions (apart from roses) that are on display. Being ‘show-stoppers’, their impact allows the designers to then infill and arrange around them the more delicate flowers and foliage to an harmonious effect. Visitors admire, with ‘oooh’s and aaah’s’ at the soft, subtle shades and again, of the deeply-rich and vibrant colours of each and every iris grouping.

The name Iris means rainbow and in Greek mythology ‘Goddess of the Rainbow’. The petals and roots of several species, including Iris germanica (bearded) and Iris pallida (Dalmatian/Orris root) are used in the beauty industry, in the manufacture of perfumes, lotions, in food such as spices and even added to gin. Seemingly, the dried root, after 3 years, has the aroma of violets. This industry goes back to the ancient Greeks, Romans and Egyptians and probably long before their time.

I have an Iris pallida flowering in my front garden, low-growing, which is highly fragrant. This was kindly given to me by Penny S some years ago. The flower is fading so unfortunately not worthy of a photograph but it certainly should be grown, as the variegated grey-foliage blends nicely with neighbouring plants. I wouldn’t be without it.

My number-one favourite, though, is Iris ‘Langport Wren’, a Kelways‘ introduction from 1973 and deservedly worthy of the RHS Award of Garden Merit. It was flowering in my front garden until a few days ago when the slugs/snails chomped its head off! The fragrance is reputedly of orange and chocolate – but I wouldn’t know as I haven’t had the chance to find out!!! The first photo below is of this delectable flower, a painterly amalgamation of browns, purples and russets, growing in Margaret T’s garden.

Spring in Cornwall

I have just spent a very happy week at Duloe Manor, a complex of self-catering holiday apartments and cottages near Looe in Cornwall. The main house was built in the 1690s for the Rectors of the local church. The whole complex is set in lush gardens of around three acres: a few mixed beds contained lovely combinations of saxifrages, irises and other familiar perennials while in less formal areas, swathes of wild garlic provided backdrops for beautiful pink campions as well as English bluebells in full bloom. In the car park several banks of pale yellow primroses remained stubbornly but delightfully in flower! Majestic rhododendrons provided splashes of magenta and purple.

A mixed bed contained lovely combinations of saxifrages, irises and other familiar perennials

Majestic rhododendrons provided splashes of magenta and purple

Pat’s Jobs for May

1. It’s a good time to take softwood cuttings of both tender and hardy perennials such as pelargoniums, anthemis and penstemons. Place in a shady spot until roots begin to form.

2. Put plant supports in place to stop things flopping and make them yourself from shrubby prunings or just push prunings in the soil around the plant.

3. I’ve Chelsea chopped my phlox today and also done a few clematis as they are far too tall and leggy after all the rain we’ve had.

Plant Sale, Cakes, Trails, Tours, Talks!

Date for your Diary: Saturday May 18th from 10am

Preparations for our annual Plant Sale are well under way and it’s shaping up to be a GOOD DAY! The Garden volunteers have been potting up for weeks and CABAHS members have been sowing, taking cuttings and splitting their prized perennials. We will have a lovely selection for sale. They are not garden-centre plants – they are better, because we know how well suited they are to our local conditions!

The WI bakers have also been busy, and promise their usual delectable display of cakes. There will be other market stalls too and Frilly’s will be open for drinks and snacks.

For the kids, we have a “Bugs in the Bed” discovery trail around the Old Pond Garden, with a prize if (when) they solve the puzzle.

What to look out for in the Old Pond Garden April/May 2024

Tiarella ‘Spring Symphony’ – Foam Flower

This variety has an Award of Garden Merit from the RHS and it copes in the difficult dry shade conditions under the Lime trees in the Old Pond Garden.

Never say ‘Never’

A few years ago I cleared out my greenhouse following the losses of the winter and dumped in my compost the remains of pelargoniums and other dead items. It’s always a little sad to lose much loved plants which have given you their best. I then had some fun ordering new plants to replace the old ones (and some others!). A couple of weeks later, I found several of my ‘dead’ pelargoniums lying in the compost and sprouting new shoots from the roots. Of course, I swiftly took them out and potted them up to achieve lovely healthy plants. I am now a little less impatient to discard anything that looks dead.