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90 tried and tested drought-tolerant plants

This is a list of some of our favourite drought-tolerant plants that have been tested either in our own gardens or are recommendations from our very knowledgeable and supportive readers.

Shrubs

Buddleia – their flowering period may be a bit truncated but they seem happy to give it a go

Callistemon – bottle brush, a bit of a marmite shrub due to its spiky foliage, but definitely a heat lover.

Caryopteris – welcome pale blue flowers at the end of the summer

Cistus – should be able to cope unless planted in the last couple of years, when you may need to chuck a bucket of water at it every couple of weeks

Cistus creticus
Cistus cretics

Colutea – bladder senna. The commonest species is Colutea arborescens which grows into a small tree but I have the smaller Colutea persica var. buhsei which copes really well with a hot dry site. Lovely yellow/orange two tone pea-like flowers (scented and bumble bee friendly) followed by bladder fruits – pretty pinnate foliage – whats not to like?

Convolvulus cneorum – the hotter it gets the more this silver leaved convolvulus likes it!

Euphorbia – with their semi succulent stems most garden euphorbias seem to stand up well to heat and drought. The smaller, prostrate ones such as E.myrsinites seem to actually revel in it, with the taller characias types also coping well. An exception would be E.dulcis which is a more fragile woodlander, whose stems need to be cut right down after a dry spell.

Genista and Cytisus brooms prefer the hotter spots in the garden

Grevillea – the cultivar ‘Canberra Gem’ seems particularly happy in my gravel garden this summer.

Hibiscus syriacus

Hibiscus ‘Purple Ruffles Sanchoyo’ – cheerfully shrugging off the dry heat

Hypericum – My ‘Rowallane’ bushes look as happy as they did at the start of June. Beware of H. calycinum, though, which can be very invasive.

Lagerstroemia indica crepe myrtle- this shrub/small tree actually needs a good whack of heat to produce its stunning clusters of late summer flowers – mine (I think it’s ‘Braise d’Ete’) also has amazing red autumn colour.

Lavender and rosemary – very drought resistant in the ground – less so in a pot.

Nandina domestica – heavenly bamboo – not a true bamboo, looks like one but much better behaved, this rugged little shrub seems to use water very efficiently, still produced creamy panicles of flowers in the hottest spells which lead onto clusters of red berries in autumn.

Nerium oleander

PhlomisP. fruticosa with yellow hooded flowers or P. italica with pink flowers. Also the pale yellow russelliana

Physocarpus – all seem happy in the heat, including P. “Lady in Red’ and ‘Dart’s Gold’

Physocarpus ‘Lady in Red’

Potentilla – not one of my personal favourites but pretty drought tolerant

Tree poppy- Romneya coulterii – but does have a suckering habit.

Roses – Being very deep rooted, most roses will survive a drought but the only ones in my garden that look supremely happy in a heatwave are the scotch briar roses Rosa spinosissima I have a double form, and Louise rates the creamy cultivar ‘Dunwich Rose’ – I bought Caroline and I one each named ‘Mary Queen of Scot’s’ in the sell off from the Binnys Plant stand at Chelsea this year, and it’s still looking remarkably chipper even though it’s still encased in its original small pot. They only flower once in early summer but have lovely ferny foliage and small dark hips. Beware though – if they’re happy they sucker like mad, so best grown in isolation

Salvia x jamensis and other shrubby salvias

Sambucus – All my ornamental elders such as ‘Black Lace’ are faring very well without water, and providing glossy and striking foliage among the perennials.

Sambucus ‘Black Lace’ – a dark-leaved elder

Santolina chaemaecyparissus – lavender cotton. a low evergreen shrub with silvery leaves (and a rather odd scent if you rub them!)

Sphaeralcea ‘Sour Up’, and ‘Childerley’ – these need a mild climate, but will flower for months in a hot, sunny summer.

Tamarix – often grown in hot windy seaside locations.

Teucrium chaemadrys – wall germander – low-growing late summer flowers looking like a glossy heather – seems impervious to heat or drought – very attractive to bees

Tree ferns – these are recommended as drought -tolerant by one of our readers.

Trees

Just a quick reminder that ALL newly-planted trees are going to need extra water and TLC in their first couple of years, before they get their roots properly established in the soil.

Albizia julibrissin, the Persian silk tree – thank you to one of our readers who has put forward this little tree, that performs brilliantly in a heatwave

Catalpa, Indian bean tree – can get big, but ours has lovely large leaves and gorgeous summer flowers, so if you do have the space, I can recommend it.

The summer flowers of Catalpa

Eucalyptus – most have the ideal foliage for heat, and many have very attractive bark

Gleditzia triacanthos – the Honey Locust – we’ve never seen ours looking so happy!

The evergreen Magnolia grandiflora looks supremely happy in the heat, but it’s a whopping great thing – there is a dwarf version ‘Little Gem’ that would be more manageable in a smaller garden

Olive trees – these are becoming more of a common sight planted in the ground in Southern England – they may lose their leaves in a late winter blast of cold, but seem to recover. Even in a pot they seem to exist happily on very little water.

Ground cover

Armeria – thrift is okay in a hot spot

Bergenia – elephants ears also tolerate drought once they’re ‘dug in’

Epimedium for shady areas

Epimedium sulphureum versicolor
The dancing little pixie-hats of Epimedium sulphureum versicolor

Geranium macrrorhizum will provide good ground cover in semi-shaded places with scented foliage

Helianthemum – rock roses

Thyme and grounding hugging sedums for sunny areas

Climbers

Clematis nepalensis – a rare clematis that actually loses all its leaves and goes dormant in the summer months (so avoids drought damage but does look alarming dead! ) but then springs to life in the autumn and flowers over the winter months

Ivies – their tough leathery leaves seem impervious to weather extremes and can also act as natural air conditioning if planted against a house wall.

Ivy seems impervious to most weather conditions

Perennial sweet peasLathyrus species- seems very tolerant of heat and dryness, though they will go to seed quicker. This is the very opposite of the annual species who loathe having dry feet!

Trachelospermum – evergreen either the white or there is a pretty creamy coloured one – very scented

Herbaceous plants

Achillea

Agastache

Alstroemeria

Althaea cannabina – I can’t speak too highly of this wonderful hollyhock relative that shoots up in midsummer to present a diaphanous cloud of small pink flowers, dancing gaily no matter how hot it gets. Seeds itself around when happy.

Callirhoe involucrata – the purple poppy-mallow


Cynara cardunculus, cardoon

Cardoons

Catanache

Crocosmia

Diascia personata – highly recommended. One of our readers says that this has apparently flowered non- stop throughout the heatwave

Digitalis ferruginea, the perennial foxglove – this has been a lifesaver in my garden this summer, providing pretty bee-friendly vertical accents when others have faltered.

Echinacea – we’re getting reports from our readers that echinacea are coping well with the heat with Pallida, White Swan, Pink Parasol and Tomato Soup all getting the thumbs up

Echinops – globe thistles. They look right at home in the sun.

Echium – one of readers has reminded us that if your garden is mild enough to sustain them over winter several species of echium including the towering E. pininana will cope with heat and drought

Echium candicans
Echiums are very happy in the heat

Erodium – related to geraniums and pelargoniums these diminutive alpines form satisfying mounds of ferny foliage and flower all summer long on hot walls or crevices. There are lots of different species and cultivars, but beware, collecting them can be a bit addictive (but you’ll be in good company – my current favourite is the sulphur yellow Erodium chrysanthum)

Eryngium. With their deep tap root, referred to as ‘the old world’ species (E. plenum, alpinum, bourgatii, giganteum etc) they seem to thrive in drought, whereas the new world species (E. yuccifolium and pandanifolium) have shallower root systems that can struggle in prolonged drought, with the exception being the huge E. pandanifolium ‘Physic Purple’ which seems to need a long hot summer to prompt its massive flower spikes to make the effort

Gaura lindheimeri

Hyelotelephium – Sedum – succulent stems and flowers protect them beautifully

Ipomopsis rubra – a flowering plant of the phlox family, also known as the standing cypress, or Texas plume

Kniphofia ‘noblis’ – pretty much ruling my summer border!

Kniphofia, red hot pokers – as their name suggests, they like it hot!

Lychnis coronaria, rose campion – a short-lived perennial in either magenta, white, or pink-flushed. Seeds around when happy but never a problem

Nepeta, catmint – I cut mine back in the middle of this year’s very hot July, and it’s full of flowers (and hundreds of bees and butterflies) again now, without being given a drop of water.

Origanum, marjoram

Oenothera, evening primrose – rests up during the day and comes to life at night.

Oenothera stricta ‘Sulphurea’ evening primrose
Oenothera stricta

Papaver rupifragum, the Spanish poppy – the name says it all, very happy in baking soil.

Perovskia – pruned hard in late spring to a woody framework, this will withstand really hot conditions with pale purple flowers for weeks in August and September

Verbena bonariensis – the plant that never falters!

Zauschneria – a species of willow herb from the dry slopes of California.

Annuals and biennials

Cichorium intybus,  chicory

Eschscholtzia, Californian poppies

Eschscholtzia – Californian poppies

Galactites tomentosa, the purple milk thistle. There is also a very refined white form

Verbascum, giant mulleins – these produce a basal rosette in the first year and a huge flowering spike in the second summer. The cultivar ‘Arctic Summer’ comes highly recommended by one of our readers, and has apparently flowered magnificently in the heat wave.

Grasses

Briza maxima, quaking grass – can self-seed invasively but very happy (and pretty) in very poor soil

Festuca glauca – dwarf forms and ‘Elijah Blue’ particularly good in drought

Miscanthus nepalensis – a smallish slightly tender grass that produces gorgeous coppery golden tassels in a hot summer, common name the Himalayan fairy grass and also quite happy in a pot

Most grasses have evolved in hot, dry prairie situations so will cope with a British heatwave. The low-growing Stipa tenuissima is particularly joyful as is its taller cousin Stipa gigantea.

Beautiful Stipa gigantea – the giant oats

Bulbs, tubers etc.

Agapanthus – these love the heat but will need a decent amount of water if grown in a pot

Crinum – despite their large strappy leaves crinums are sun worshippers and will produce stunning white or pink scented lily-like flowers in early autumn if planted in the right place. They will however need a small mechanical digger to shift their enormous bulbs if ever you tire of them

Crinum moorrei
Crinums have huge strappy leaves

Dahlia coccinea

Summer-dormant bulbs such as nerines and Amaryllis belladonna – soak up the heat and flower in the autumn

Pot plants

Aeonium

Aloe

Echeveria

Oleander

Pelargonium – obviously!

Pelargonium
Pelargoniums are an obvious choice to give bright colour however hot the summer

Sempervivum – house leeks

By the3growbags

We're three sisters who love gardening, plants and even the science of horticulture but we're not all experts. We'd love everyone even remotely interested in their gardens to be part of our blogsite.

20 replies on “90 tried and tested drought-tolerant plants”

Thanks so much, a really useful list of drought friendly planting. My favourites in our dry south facing garden are agapanthus, nepeta, echinops, lavender and one I don’t think you mentioned, gaura. Also want to expand on the grasses…

Hi Charlie, Laura here, lovely to hear from you and glad you approve of our list! I always think of a very successful group of plants at the side entrance to the Cowdray farm shop in Midhurst (for the benefit of others Charlie and I used to work together in Midhurst …) that was just Gaura, Verbena bonariensis, Stipa tenuissima and a perovskia – it looked fantastic and flowered for ages in the most arid, sunny and windy site. Hope to see you soon Laura x (think gaura is already on our list, but just as a stand alone name without the gushing endorsement it deserves!)

Hi Alison, that’s such a good plant isn’t it, I know Louise rates it really highly which is always a fantastic endorsement for a plant to have. She gave me one too a few years back but I seem to have lost it so I’ll have to drop some heavy hints and hope she might take pity and give me another! We’ll add to our list ? best wishes Laura

I also have a dahlia Gerrie Hoek which is coping well. I planted two into the herbaceous border and although they were eaten almost to the ground by slugs initially, I gave them a bit of water a month or so ago and now there are no slugs they are doing brilliantly!

Hi Maggie, agreed – every cloud has a silver lining and at least the drought has put paid to the slugs! I suppose the dahlias have their tubers to use as a water store in the same way as succulents use their stems and leaves – mine are hanging in but I wouldn’t say enjoying life. ‘Gerry Hoek’ looks lovely though and it’s definitely going on my list for next year! Best wishes Laura

I’ve enjoyed a couple of giants this year that seem to thrive in this weather and are great if you’ve got a large space to fill. Verbascum Arctic summer leaves a meter across with an initial flower spike 7ft high followed by multiple smaller spikes it’s been flowering since May just coming to an end just as the cardoon is starting to flower it’s it’s first year so only 6 foot tall and I’ve got great hope next year for the echium and vipers bugloss seedlings that are going in in the autumn. The red hot poker’s have enjoyed the weather as well. All doing well on very little raj this year

Hello Jan, these are all great additions to our list! Agreed about the verbascum and cardoons and although my garden is too cold to over winter echiums outside I’ve seen them growing in coastal gardens in the driest and most inhospitable places imaginable. My red hot pokers are newly planted and have struggled a bit in the heat but we’ll take your word for their heat tolerating qualities and add them too. Thanks very much for taking the time to give us these excellent suggestions best wishes Laura

Caryopteris has come through the drought and is now flowering (in Seaford, East Sussex), olive trees are fine, surprisingly our tree fern is looking good. I agree with you about roses, the pot ones needed some TLC but the ground planted ones are doing well. Alstroemerias seemed to cope well too.

Thank you for writing in – some super additions to our list. `I suppose it might be expected that olive trees would be okay in an arid summer, but tree ferns are more of a surprise! I haven’t had a caryopteris for many years, don’t really know why because I always enjoyed those soft blue flowers right at the end of the summer. Perhaps I should get another one……oh dear, another one to add to the list! All the best, Elaine

Had a terrible shock this summer so driven to explore low water/no water gardens (am in the arid east). My top favourite, by a long way, has been the lovely sphaeralcea amigua (?) ‘Childerley’. Any of the sphaeralceas have been generally good in east anglia mind. Months of flowering lushness. In orange. Also with generally peachy theme – western agastaches (such as Apricot Sprite and what I always referred to as Californian fuchsia – zauschnerias (I think mine is ‘Western Hills’). Finally, a shout out for callirhoe involucrata, catanache and ipomopsis rubra – along with the shrubby salvias, these have salvaged a summer (after asters, rudbeckias, zinnias et al. failed), leaving me with lots of pale blues and lilacs but few warm and cheerful tones.The dahlias were surprisingly stalwart – especially d.coccinea.

Hi Suzy, Elaine here. Thank you so much for writing in. What fabulous suggestions to add to our list of drought-tolerant plants! I have the lovely Sphaeralcea called ‘Sour Up’, on the recommendation of our columnist Louise, and it has indeed been very happy this summer. I have just looked up S. ambigua ‘Childerley’ and it looks utterly lovely – it will be added to my wish list directly! Pale blues and lilacs actually do look rather wonderful with autumnal colours, don’t they – there’s a very satisfying tonal contrast that makes them glow and almost’sing’. What a lot a scorching summer has taught us! With best wishes.

I’d recommend Lychnis Coronaria. I have them in magenta growing in the shingle in our front garden and they’ve looked fantastic for weeks. They’re just finishing flowering and I have some seedlings from last year’s seeds that will go in the ground later this year ready for flowering next year.

Hello Allison, that’s such a good shout and a plant that definitely should have been on the list in the first place- I don’t know how we overlooked it! You can get them in a range of different colours too, magenta like yours, or pure white, or with a white with a pink tinge I believe. It’s Laura here, and delighted to hear that your love of gardening is blossoming to the point that you can teach us three a thing or two! Laura x

Thanks for your reply Laura, I only realised after I’d posted that I was commenting on last year’s chat.
I have a few white Lychnis in the back garden but I’ll be on the look out for the white tinged with pink!
A x

That’s fine Allison this is an ever-evolving list that doesn’t really have a time limit! I’ve just added the Lychnis to the list 👍 The pink one is called ‘Angels Blush’. L x

Hi. We live in Sussex and our garden is an excavated sandpit which was landscaped many years ago but being on sand and in a drought area is a bit of a nightmare because any little bit of rain drains straight through. We have lychnis which does well but doesn’t last that long but self seeds so always have a display of magenta and white in the following years. Love plants that do their own thing!. I have bought a few gaura plants this year and they seem to thrive and the butterflies love them. Shrub Lavatera but has a short flowering period. Never ending slug control but now have a late showing of dahlias. Lavender loves our soil but again short flowering period. Verbena has self seeded up through path and seems to prefer that location rather than in the garden so I guess having restricted roots is their bag! Thanks for your plant list will definitely consider which ones suitable for sandy soil.

Hi Sarah, thanks for writing in – sounds like you do have a bit of a challenge there! I reckon you are on to a winner with Gaura, and I, like you, love Lychnis. I think sedums (Hyelotelephium) would be okay in your soil, and so many of them have lovely succulent foliage as well as long-lasting flowers beloved by butterflies. I know EXACTLY what you mean about Verbena preferring to seed themselves in the path rather than the flower-bed – Verbascums are very good at that rather tiresome trick as well! I hope our list provides you with some more ideas – good luck. All the best, Elaine

I’d like to recommend a rose . Meg is planted in a ridiculously narrow bed against a south facing 6ft wall with uninterrupted sun. She repeat flowers generously when dead headed and is far too far from water for me to bother with watering ! Bees and bugs love her as she has wonderfully open flowers. She ticks all boxes for me . Liz

Hi Liz, What a pleasure it was to read your message – I adore this beautiful rose too! Many years ago I had a friend whose house-wall was covered with this gorgeous climbing rose, I begged a cutting and it has now grown in my garden for a very long time. My friend died tragically in an accident and the rose she gave me has become even more precious to me now. You might know this, but if you stop deadheading it towards the end of the summer, the remaining flowers develop into the most charming large hips perfect for Christmas decorations. Meg is a winner on every level. All the best, Elaine

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