THE MODERN MINT BLOG

Jul03

Plants for Clay Soil

There are lots of plants for clay soil. Difficult as it is to work with, the opportunities to tend a fabulous garden of well-fed, strong and voluptuous plants are second to none (just try not to despair, at the end of the day, when trying to remove the clay from your boots!)

Oak House 26
Roses are the absolute first choice for clay.

We made a beautiful rose garden for a client in Hampshire. It was on blue clay and halfway down a gentle slope, so got plenty of water. Each bed had a single variety of rose in, 15 plants per bed, and it looked fabulous as you peered through the hornbeam arch (we chose hornbeam, though not as nice a hedge as beech, because it could cope with the site.)

The client had wanted lavender and box to edge the roses and fill in any gaps – but there is no way they would have survived. Ilex crenata may have coped better, but we doubted its longevity (the site really was wet at times.)

So instead we built a small seating area, added a sculpture and made sure the grass sward was beautiful and cut consistently.

Simple and striking seemed the way forward in this case.

Val Bourne gives a rundown of some fantastic plants in her book The Natural Gardener: The Way We All Want to Garden: Preserving Nature’s Jigsaw. She said…

“Roses (even those old-fashioned beauties), viburnums, hostas, phlox, monardas and asters will love your garden.”

You won’t go far wrong if you just planted these!

The hostas may get eaten by slugs, so if you don’t want the hassle either steer clear of growing them, use copper rings around the plants, or add gravel and grit across the whole bed. Decide on your maintenance capabilities really, and how much time you want to spend on picking off and squashing slugs. It wouldn’t be our first choice of jobs to do…

If you do want to buy hostas then you can see what is on offer here – Jersey Plants Direct – they also sell a Viburnum opulus at a fair price if you type that into the search. Viburnums are solid plants (see the V. carlesii in the picture below) and they provide a cluster of flowers at the start of the season and then berries at the end.

Do plant them!

viburnum carlesii


Cornus is another fine choice for soils that are damp – normally planted for winter stem colour, we also think they do a good job during the summer when in leaf – Cornus alba ‘elegantissima’ has a white margin on the green leaf, which provides a lovely calm backdrop for bigger summer flowers.

Astrantia is a favourite of ours, if you want something perennial. Let some aquilegia seed around it, maybe some campanula and forget-me-not, and you have a soft (possibly too soft? If so, add euphorbia palustris!) late spring scene of delightful flowers.

We always found, when growing dahlias, that lots of water helped. So though you will lose the tubers over winter in clay soil, putting them in for summer will give you a beautiful display. Crocus are currently doing a special offer on dahlias in there ‘bulbs’ section – so don’t miss it, go now!

That should get you started. Just remember to suit the plant to the place – that is what modern garden design is about, and it means the plant is happy and you won’t have as much work to do… unless (and it’s a fine problem to have) they grow too well…

All the plants we’ve talked about can be bought and delivered from Crocus or Jersey Plants Direct – Jersey Plants Direct offer a free delivery no matter the size of the order. Which we think is more than reasonable….

Or for decent books to use as a guide, try Beth Chatto…

Or this one on plants for problem places…

Or this one…

Oct29

The Amelia Project – Episode 88: Didius Julianus

Friends of mine write a sitcom podcast called The Amelia Project (I wrote about this years ago, when they started it….!) December 2024 I had some fun playing the tiny part of Fornio in episode 88 – Didius Julianus. I have not listened to the episode yet, as I am clearly not an actor… and the thought of listening to my dulcet tones for the few minutes I’m in it just… makes me feel ill. But the recording and being in the studio was great fun, the real actors were hilarious and the script is brilliant – not just funny, …

READ MORE

Oct29

Waltham Place Topiary Workshop 2026

With the European Boxwood and Topiary Society, I run two workshops each year at Waltham Place, one of my favourite gardens. The next topiary workshop there will be on Friday September 4th 2026. Details and how to book yet to be announced, but get in touch with them now to get on the waiting list, as last year we had double the amount of people wanting a place than we had space for. The Waltham Place website is here – topiary workshop 2026. See the teaching page for how else I can help you with the topiary in your garden …

READ MORE

Aug04

Box Hill – Novella by Adam Mars-Jones

I picked this book up back in 2020 because of the title – Box Hill – fabulous, I thought, a book about boxwood. I’ll peruse this for its respective thoughts on the plant I clip most when I make topiary. I didn’t read the blurb on the back. Didn’t know the author (although I knew the publisher, Fitzcarraldo Editions, as I love many of the essays they have published… so trusted the author would be worth spending time with.) By page 2 I realised this novel wasn’t quite what I had expected. I started the book at 10pm, after getting …

READ MORE