Charlton and Blackheath Amateur Horticultural Society

Plant of the Month: Pittosporum tobira ‘Neige du Mont Ventoux’ (May 2025)

This variegated Japanese Pittosporum — P. tobira ‘Neige du Mont Ventoux’ — is a lovely addition to any garden, and particularly courtyard gardens, where space is at a premium, as it is the perfect specimen for growing in a container.

It was at a rare plant fair in Kent many years ago when I spotted this very appealing shrub. It was “twinkling” at me so, naturally, I found I just could not resist it and brought it home! Because of its branched structure, it was placed in a terracotta container and there it has remained, contented, to this day. I hadn’t realised at the time though, that this variety is very suitable for a container, as its height and width is generally no more than one metre at maturity.

May 2025 Talk: Francesca Murray on The Gardeners’ Royal Benevolent Institution

On 19 May we welcomed Dr. Francesca Murray to give a talk on ‘The Gardeners’ Royal Benevolent Institution and its horticultural heroes and heroines’.

Dr Francesca Murray speaking at CABAHS, May 2025

Dr. Murray is an author, speaker and researcher on garden history and the horticultural trades, with a special interest in nineteenth century gardeners and nursery owners.
Her talk focused on the range of benevolent, mutual aid and charitable societies – as well as the individual characters that founded and used them – that were set up in support of gardeners, florists and associated trades in the years before the welfare state was even considered.

May 2025 Meeting and Show Table

There was a great turnout for the CABAHS May meeting, even after the exertions of the previous day’s Plant Sale! A small but beautiful range of items on the Show Table, from a cornucopia of Spring flowers to a single rose and a cactus. Congratulations to Kathy for winning this month’s ‘Best on the Table’ prize with a vase of Salvia, Cerinthe, Teucrium, Hesperis, Centranthus, Luzula and chives.

Pat’s 10 jobs for May 2025

1. Border irises are really doing their thing now and the show can be brief but make sure to keep the soil around their roots free of weeds so their rhizomes can bake a bit in the sun.

2. Time to Chelsea chop your tall perennials to stop them flopping later or to extend flowering. Good candidates are Phlox, Penstemon, Helianthus, Sedum/Hylotelephium – and I include vigorous Clematis too. You can either do the whole plant at once or just some stems to extend flowering, although it may result in smaller flowers.

3. Deadhead displays of pot plants like Violas to keep them flowering and stop them going to seed. Remember to give them a feed to keep the display going.

Hylotelephium telephium 'Touchdown Teak'

Plant Sale Bonanza, May 2025

What a day was had at yesterday’s plant sale in the Peace Garden! We had more plants for sale than ever before, longer queues than ever before, and made more money than ever before. The CABAHS members and Charlton House garden volunteers worked harder than ever before too – but it was absolutely worth it. Between us we raised well over £4000 to be divided between the Greenwich & Bexley Community Hospice and the gardens maintenance fund.

Plants for sale! Charlton House Gardens volunteer plant stalls, May 2025 — Just one moment at a busy, busy plant sale

Plants for sale! CABAHS plant stalls, May 2025 — Just one moment at a busy, busy plant sale

Plant Sale! 18 May 2025

That’s this Sunday!
11-3pm in the Peace Garden at Charlton House

We are gathering plants, plants and more plants…

Fantasy garden tables

Those of you who are regular viewers of BBC Gardeners’ World will most likely have noted Monty Don’s table of potted plants, which varies throughout the seasons and looks like something most of us can only dream of! In a recent article by Alice Vincent, she describes what she calls Monty Don’s ‘Fantasy table’. (My latest garden fantasy? An elegant table covered in flower pots)

The scale of Don’s table and the amount he has displayed is something many of us may aspire to, myself included! On a recent visit to Anna L’s garden, I was impressed by how she had similarly grouped a range of plants in pots, a mix of bulbs, a small Phlox stolonifera, Violas, a Clematis waiting to be planted and a miniature Hosta. Anna very kindly listed the plants for me and you can see from this that a display does not have to be carefully curated, but a selection of whatever takes your fancy!

Anna's garden table — Anna’s plant table in late spring, featuring:
Narcissus ‘Thalia’ and N. ‘Pipit’; Clematis ‘Rising Star’ and C. ‘Bees’ Jubilee’; Pelargonium australe; Phlox stolonifera ‘Fran’s Purple’; Anemone de Caen blue-flowered; Primula ‘Stella Neon Violet’; Phormium; purple Viola; Hosta ‘Lemon Stiletto’

Keukenhof, April 2025

I returned to Keukenhof for a brief visit again this year. Transport in the Netherlands makes this a very easy trip and it is well worth making a stopover in Haarlem, which is a lovely town. I have little to add to the descriptions of my previous visits (April 2022, April 2023) so have just included a selection of photos which lovers of colour and tulips might enjoy!

Vija V

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.

Plant of the Month: Berberis x stenophylla (April 2025)

If you have a shady area in your garden that needs ‘lightening up’, then perhaps consider the rosemary barbary. This shrub is looking fantastic in Linda B’s garden at the moment and I’m hoping that it will seed on my side of the fence in the near future.

Berberis x stenophylla
Photo by Agnieszka Kwiecień via Wikimedia Commons https://creativecommons.org/licenses/by-sa/4.0 — **Berberis x stenophylla.**
_{Photo by Agnieszka Kwiecień via Wikimedia Commons}

Her Berberis is growing on a raised area so it gets good drainage, tolerating the shady side and facing north. So, it’s a tough, evergreen shrub, liking good drainage and drought-tolerant. Its tiny, narrow leaves (much like rosemary) are a leathery green, with a sharp point to the tips.