Charlton and Blackheath Amateur Horticultural Society

Pat’s 10 jobs for July 2025

1. If herbs like thyme have finished flowering, trim them back to keep them compact and use the trimmings to do some cuttings.

2. Stake Dahlias before they get too tall and straggly or the stems may snap. Keep well watered in this dry weather.

3. To conserve water and before we get a hosepipe ban, just water around the roots of plants and mulch them if you can. Some are really suffering at the moment. So why not start sowing seeds of Eryngium giganteum ‘Miss Wilmott’s Ghost’ for a drought proof plant for next year? Loved by pollinators too.

Eryngium giganteum 'Miss Wilmott's Ghost' at Great Comp, covered in pollinators — Drought resistant plants that pollinators love: *Eryngium* and *Pseudodictamnus*

Bee on Pseudodictamnus mediterraneus (formerly Ballota) — Drought resistant plants that pollinators love: *Eryngium* and *Pseudodictamnus*

Have you been to Beckenham Place Park lately?

Signpost in Beckenham Place Park, April 2024

Not too far away (and on the 54 bus route from Charlton and Blackheath!) lies a ‘new’ old park: Beckenham Place Park. The name can be confusing – it lies on the border between the London Boroughs of Bromley and Lewisham, but is run by Lewisham Council. It is larger than you might think, at 96 hectares (well over 200 acres), and stretches from Beckenham Hill railway station in the north to Ravensbourne railway station in the south, west into Beckenham ‘proper’ and east toward Bromley.

Beckenham Place Park information sign (2024) — Park map with trails: download

Beloved of dogwalkers, wild swimmers, park runners, bluebell spotters and vintage shoppers, since Heritage Lottery Funding was awarded in 2016 there have been many changes and a huge increase in community use. Old features of the 18^th century estate have been brought back, playgrounds added and the 1762 mansion (which was formerly a golf club house with a small visitor centre) is now home to artists’ studios, a café, a vintage shop and hosts multiple events.

But to the gardens…

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

Penstemon ‘Garnet’ – Beardtongue

Although at its peak in July, this has been out since May and is one of the longest-flowering plants in the Old Pond Garden. At the moment we really love it for it’s drought tolerance – no need to water this one! It has dainty, tubular flowers which insects with long tongues like bumblebees can enjoy, and it provides both pollen and nectar for visiting insects. Prefers a sunny spot but will do well in part shade too, so you can spot it in several of the beds. It is a semi-evergreen, only losing it’s leaves in the very depths of winter.

Dianthus carthusianorum – Carthusian Pink

Another lovely drought-tolerant plant that we don’t have to water! It must be in full sun to flower well, so it just loves the gravel garden in the central bed of the Old Pond Garden. It’s a perennial, forming bigger clumps each year and giving that great “pop” of colour. A gentle self-seeder and long season in flower.

August Flower, Fruit & Vegetable Display 2025 – classes to enter

This year’s Autumn Show will be held a month earlier than usual, on Monday 18 August, at 7.30pm in the Old Library at Charlton House.
Please note that due to the earlier date, the Potato competition will be judged as part of the Show Table at September’s meeting.

Here’s a reminder of last year’s efforts!

Whole table of entries, Autumn Show 2024

The classes you can enter this year are shown below, please have a go at as many as you like!

June 2025: Gardeners Question Time

This is now a regular and popular event in which our panel answer questions sent through in advance from members, some with illustrations or examples sent in plastic bags. The panel this year consisted of our very own CABAHS committee member and all-round plant guru Pat K, our President Sir Nicolas Bevan and horticulturalist and teacher Joe Woodcock. Sir Nicolas invited advice and contributions from the audience too, saying that in a room full of gardeners, the panel did not “have the monopoly on wisdom”. We did our best!

Our 'Amateur Gardeners' Question Time' panel, June 2025 — Our esteemed panel: Pat, Nicolas and Joe

Last year we were all overwhelmed by slugs and snails, this year’s scourge is aphids! The first question related to a particularly damaging infestation on Buddleja, which seemed to have caused a virus. Several people, including Joe, have experienced the same this year. He was able to tell us that it is likely to be a specific species, the Melon-cotton aphid, which the RHS are monitoring (you can report cases to the RHS here).

June 2025 Meeting and Show Table

There were some exquisite entries for the Show Table this month (click on the images to see in detail), but it was the simple, single species vase of sweet peas that won the prize.

Purple and white for June (Show Table 2025)

Congratulations to Pat for ‘Best on the Table’ – they are perfect!

In addition to the Show Table, there was a raffle with some very desirable prizes, a heaving plant and seed sales table and of course, our annual ‘Amateur Gardeners’ Question Time’ with Pat, Nicolas and Joe.

Ali H

Plant of the Month: Digitalis canariensis (June 2025)

Being the month of June, I am pleased to say that there is plenty of colour in the garden, including Rosa ‘Bobby James’ out in flower, but, the star plant for me is definitely the Canary Island foxglove, Digitalis canariensis.

This is an eye-catching shrub (albeit short-lived) with burnt-orange-apricot foxglove flowers, (flowering since May), supported by strong, upright stems and dark green, serrated-edged foliage.

Digitalis canariensis (Canary Island foxglove)

Pat’s 10 jobs for June 2025

1. Plant out Dahlias in a sunny spot in fertile soil adding some compost to the planting hole. I have to surround mine with Strulch on my allotment to protect them from the hundreds of slugs and snails lurking all around.

2. Take softwood cuttings now of Anthemis, Salvia, Verbena, Penstemon and Fuchsia. Cut below a leaf node and dibble around the edge of a pot. Salvias will also grow fine roots in water to give them a head start.

3. Look out for hellebore seedlings around the base of your favourite plant. The resulting plants may not resemble the parent but they could be even better.

New Dahlia shoots (not yet eaten by molluscs)

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

Phlomis italica – Balearic sage

Phlomis italica and buff tailed bumble bee

This is an evergreen shrub in the mint & sage family, native to Spain, which has lovely woolly grey-green leaves (touch them!). The hooded pale lilac flowers are beloved of pollinators, especially bumble bees. The ones in the front beds at Charlton House are humming with buff tailed bumble bees.

Phlomis russeliana – Turkish sage

Another one in the mint & sage family, but this is not a shrub, it is a herbaceous perennial (so it drops it’s leaves in Autumn but comes back the next year). The name ‘Phlomis’ comes from the Greek word meaning ‘flame’. Heart shaped leaves of some species were used as lamp wicks in ancient times. The stiff upright stems carry yellow flowers, which look good as seed heads and provide shelter for insects in winter. It gently self-seeds – we have been potting them up so look out for them in a future plant sale!

A Visit to RHS Harlow Carr

Jean and I were very sorry to miss the (highly successful) plant fair on 19 May but we did have a lovely visit to the fabulous garden at RHS Harlow Carr instead.

Sycamore sculpture, RHS Harlow Carr, May 2025

RHS Harlow Carr is a short drive or bus ride away from Harrogate, a very elegant spa town in North Yorkshire. The garden opened in 1950 with the intention of trialling and showcasing plants that would thrive in a northern climate as opposed to the possibly easier growing conditions of RHS Wisley.