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Growbag Blog

Who doesn’t love a hardy geranium?

There is simply nothing as dependable as a hardy geranium! We’re talking here of the rugged, low-growing, outdoor types rather than their glamorous cousins, the pot plant pelargoniums.

Now is the perfect time to plant them. Or better still, put a quick spade through your neighbour’s and get a division for your own garden! You would have thought that this was a fairly safe subject for the three of us to let you know our favourite varieties, plus a few tips on growing them. But as usual it’s not long until the disagreements bubble up……….


Me first, and I reckon hardy geraniums (or ‘cranesbills’ as they are known – their seed pods resemble the cranes’ beaks) are great little garden plants. Adaptable, with pretty leaves, colourful blooms, and often a long flowering season – I adore them. With hundreds of different species and endless cultivars to choose from, it’s hard to whittle down my favourites but here goes:

Geranium ‘Rozanne’ – hard to have a discussion about hardy geraniums without mentioning the ‘Plant of the Century’ – blue-mauve flowers for months, and stunning when weaving through other plants – it’s rightly our feature picture above.

G. ‘Brookside’ is similar, and it’s a real corker!

Geranium ‘Brookside’ is a real stunner!

Geranium macrorrhizum ‘Ingwersen’s Variety’ – a rather furry-leaved low-growing variety for shady spots with small pink flowers and apple/menthol-scented foliage. There’s a covetable one called ‘Spessart’s White’.

Geranium ‘Ingwersens’ Variety’ – pretty flowers and scented foliage

Geranium pratense – the meadow cranesbills are taller and more airy. And, Caroline, they can stand up to -45 degrees, so you should be okay with them in the Highlands! G. pratense Southease Celestial‘ is a very beautiful but rare variety – Louise Sims has extolled its virtues in earlier piece – link is at the bottom. (It’s in her lovely book as well – A Plant for Each Week of the Year – find it in our online shop).

Geranium pratense ‘Southease Celestial’

I find the ones with double flowers don’t hang for more than two or three years, but the excellent Hardy Geranium Nursery says one of their best sellers is a pretty double-flowered white one in its catalogue called ‘Laura’ – I wonder if they realise how cold-hearted their namesake can be at times?


Gawd – did you notice that barbed little comment at the end there? It all started when I announced that I’d dug up and replaced all the geraniums from my front border for my latest horticultural crush, Benton Irises. I think Elaine’s comment was ‘fancy giving up a summer of flowers for two weeks of glory then 50 weeks of nothing’. But honestly no geraniums were harmed in the process, and all were successfully re-homed into supporting roles elsewhere in the garden.

I generally consider geraniums to be fillers rather than front-of-house stars. (Ooh, and I may have accidentally used the word ‘monotonous’ to describe their flowering style – no wonder the old girl blew a fuse…..)

Benton iris rhizomes
Move over geraniums and make way for Benton Judith, Olive, Blue John, Primrose and Strathmore

But I do really admire geraniums, and am drawn to those who have adapted to fill otherwise awkward niches in the garden. My all-time favourite is the shade-loving Geranium phaeum, the mourning widow, or dusky cranesbill, rather sombre names for this gentle woodlander. It spreads into every shady nook and cranny, and throws up its subdued but classy deep purple flowers on tall stems in the spring. The bees go bonkers for them.

I grow the cultivar ‘Samobor’ which has striking markings on the leaves, whilst ‘Lily Lovell‘ has paler mauve flowers which can show up better than the very dark ones.

Geranium phaeum
Geranium phaeum, a classy shade loving geranium whose flowers have been described as having the colour of bruised plums

My second best geranium is another outlier (and is actually only hardy in the mildest of gardens, so there’ll be more grief from the sisterhood) but I love the drama of Geranium maderense. It takes a couple of years of cosseting to bring on its amazingly architectural frame, but it’s all worth it when it erupts into a massive dome of flowers that will literally stop you in your tracks.

Geranium maderense
This is the white form of G.maderense, with the buds opening to white flowers which fade to pink

If you can’t cope with cultural demands of G.maderense you could try the other Maderian geranium, G.palmatum, which is the same idea, but smaller and hardier. This is another geranium that Louise has previously written about in her column.

Geranium palmatum
A little more manageable than G. maderense, Geranium palmatum is still an impressive plant.


Tricky – I have a foot in both camps here. I find hardy geraniums very like school prefects – dependable, well-behaved and resilient (important this, currently minus 5 here in Scotland).

In fact some 30 years ago, back when my sisters still hoped I might become a competent gardener (still waiting), Elaine gifted me rooted chunks of ‘Wargrave Pink’; ‘Johnson’s Blue’ and ‘Kashmir White’. This is how good geraniums are – they’re all still alive. So far so GOOD.

Probably actually the ‘head girl’ of all the prefects…Geranium ‘Johnson’s Blue’

They waken early in the year, grow into gentle mounds of foliage with smallish flowers and are generally nice to all their neighbours. You can depend on them to be stoical when tackling the death wishes of all your other plants.

Geranium ‘Kashmir White’
Geranium ‘Kashmir White’ on the Hardys stand at Chelsea – it has survived several house moves and plenty of neglect

BUT if, like me (and clearly Laura), you find them a tiny bit boring, the good news is that there are 700 varieties to choose from (we’ve put a link to the Hardy Geranium Nursery’s website at the end for you to have a browse through).

Geranium psilostemon or ‘Lady GaGa with Bells on’ as I consider her to be.

Look at my madcap addition G.psilostemon. Tall, rangy and bright pink… she totally outshines her well-behaved stablemates. It’s been tantamount to inviting Lady Gaga to the synod.

So folks, it’s good news all the way. There’s a hardy geranium out there for everyone and you can generally plan on it being a long-term relationship!

A couple of cultivation notes:

  • Choose hardy geraniums according to your requirements – some are tall, some are short, some need all the sun they can get, others thrive in shade, etc.
  • Cut back the early-blooming ones to the ground after flowering, feed and water them , and you’ll get a mound of new leaves and a few more flowers later on.
  • Watch out for the invasive ones – the native G. robertianum – ‘Herb Robert’ is commonly described as ‘pernicious’! G. nodosum is another that has a dodgy reputation.

We’d love to hear about your favourite hardy geraniums – do drop us a line!

Here is the link to Louise’s lovely piece about Geranium pratense ‘Southease Celestial’ and this will take you to her thoughts on Geranium palmatum.

Do have a browse through the choice of 90 different varieties of cranesbill at the Hardy Geranium Nursery.

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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.

9 replies on “Who doesn’t love a hardy geranium?”

Oh yesssssss! Always loved ’em and plan to get a few to accompany my David Austin rose (I know, show off me) when she arrives. Adore roses and geraniums – heaven. Keep up the banter kids. Love x

Hello Scott. Laura here and I’m longing to know which DA rose you’ve gone for. I was lucky enough to be given Silas Marner as a gift recently which I’m really excited about but you refer to yours as ‘she’ so it can’t be this! I was a little flippant about the workaday character of hardy geraniums in the blog this week but the combination of long flowering cranesbills under David Austin repeat flowering roses is a such a glorious, quintessentially British vision, perfect for a Royal Jubilee summer!

Hello Laura, I ordered a bare root ‘Champagne moment’. I not only love roses but do like ‘apricotty’ colours which in fact is close to an established deep apricot, wonderfully fragrant small climber which flank an arbor, so any deep blue or purple geranium I think will do: ‘Johnson blue’ might just fit the bill. Bliss … so roll on the summer and some sunny weather.

Hello Scott, I have planted a bare root Champagne Moment earlier this year. Your tip on the geranium is really helpful, thanks.

I have been gardening for years and have never grown hardy geraniums. I recently bought some and I love them. I got Boom Chocolatta. I will be getting more geraniums soon. Thanks!! 💗💗

Hi. I have some Wild Geraniums growing in my grass, how do i stop them from growing. The ones I’ve pulled up have left big spaces in the lawn.

Hi Jackie, Elaine here. Wild geraniums can be a real pain when they are growing where you don’t want them to! The only thing that really works is persistence – they are not deep-rooted, so as long as you dig out all the roots from a clump, then they shouldn’t re-grow there. Make sure that they never get a chance to set seed. Keeping the lawn low is another good idea. Covering the affected area in black tarpaulin or plastic for a few weeks would kill them, but obviously it would kill the grass as well. It might be a workable plan in late summer/early autumn and then you can re-sow the grass which will grow quickly before the winter sets in. Good luck – I hope you win!

Bought a David Austin Silas Marner last year. It really is a lovely rose & doing very well. It’s a lovely pink colour, in contrast to the book of the same name which I felt was rather sad!

Hello Carole
I’ve got Silas Marner too! I love the contrast of the red stalks against the shell pink of the flowers. I’ve never read the book but know the gist of the story and the rose certainly doesn’t look as curmudgeonly as Silas sounds! Best wishes Laura

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