
Have you got gaps? Have you finally concluded your favourite perennial must have shuffled off during the winter? Are your sunny spots now shady spots beneath spreading trees, or perhaps you realise that between your small and tall plants – there is no mid storey.
You have a small window of opportunity to save your summer garden – what are you going to do?

‘It’s not a sign of weakness to admit when you’re wrong; it’s a sign of maturity and self-awareness’ is a very helpful quote when you’re about to execute an embarrassing U-turn. So having previously scoffed at Caroline’s childish devotion to nasturtiums and sunflowers I am now coming clean with a confession that both these will be summer fillers for me this year.
In my defence both these plants have benefited from some inspired selective breeding in recent years and I bought a packet of seeds of each from the stunning ‘SheGrowsVeg’ stand at Chelsea Flower Show a couple of weeks ago. They obvs have much more sophistication than Caroline’s staple ‘Magic Roundabout’ and ‘Tumbling Tom’ and I’ve started off ‘Floristan’ a semi dwarf, multi-headed wine red and yellow sunflower, and ‘Bloody Mary’, a gorgeously decadent nasturtium, in little plugs (fantastic 100% germination in just a few days – top marks SheGrowsVeg!)) and am just popping them into appropriate gaps.

Other fillers are more plants grown from seed that have fallen into my lap – Phlox ‘Creme Brûlée’ (free this spring with Gardeners Illustrated and featured in Jo Thompson’s planting list for The Glasshouse Garden – two indicators that this is bang on-trend ) Briza maxima, a tall annual quaking grass (from the Hardy Plant Society seed distribution – always a great source of interesting plants) and a late flowering red salvia (given to me by Louise who was given seeds of it by a neighbour when she admired it in a garden still flowering when she did her poppy collection rounds in November). I’m hoping it turns out to be the lovely looking Salvia stolonifera 🤞

I’m also going to be brave and direct sow some annuals including Shirley and Californian poppies – I know, I know, again its true that in the past I have been guilty of a quick shudder as I walk past Elaine’s bank of garish ‘Orange King’, but there are now so much more delicate and pleasing pastel shades, and they will thrive in dry stony areas where other plants would struggle.


What’s happened to Laura? She is actually sounding like a normal gardener this week. She hasn’t mentioned a single plant of the Nerdia trainspotifolius variety. Just goes to show that she IS able to think like the rest of us when she really tries 🤣.
I’ve got a couple of tricks up my sleeve for the holes that can appear when the spring and early summer beauties have faded. The first is that I sowed some sweet peas late (beginning of May), they germinated quickly and are only just getting the hang of growing and twining now. The aim is to have sweet peas all the way to September, when before, they have all collapsed to fawn stems and seedheads by the beginning of August at the latest. Probably too late to sow your own now, but if you see any cheap pots of sweet pea seedlings in garden centres, snap them up – they’ll fill a high summer sunny spot beautifully!

Here’s a nifty dodge for you. If there are blank spaces in the borders that are bothering you, or Auntie Mabel is coming to tea and she’ll disapprove, just drop a pot or two of something into the gap to fill it.

I have some stringy-looking argyranthemums from last year, and TODAY I’m going to take cuttings from them, stick them in pots of damp gritty compost in an unheated box with a clear lid, pretty confident that I will have an array of bushy floriferous plants to take my borders right into autumn.

I’ve a feeling that Caroline might not be quite so industrious…

Not only do I have gaps in my garden – I’ve also have them in my purse AND my horticultural skillset.
Given points one and two, the idea of taking cuttings of my leucanthemums/argyranthemums (daisy-ish things for goodness’ sake), is hugely appealing, however point three makes this high risk. Nor do I think germinating annuals is a goer for our short Highland summer. It can snow in September here.

I have gaps variously because: a/ it turns out my plan to grow grasses, grasses and more grasses was in fact stupid x 3 (they don’t particularly like my peaty wet conditions); b/ I’ve accidentally drilled off all my dahlia shoots while experimenting with my new power hose; c/ I haven’t planned ahead for the inevitable collapse of my alliums which I bulk planted last year.

My bald spots are variously in sunny beds, at the front and middle of borders and under trees, and really I haven’t got time to devise bespoke solutions ahead of our August garden opening.
I thought geraniums might be the answer but Elaine grimaced in a way that told me I was about to make another boo-boo. She said only something sterile like G. Rozanne would perform throughout the summer….and Rozanne is a bit airy-fairy for my purposes.

It was at this point I hit on my ‘get-out-of-jail’ card. Salvia Caradonna (our feature pic) – it grows in full sun or partial shade, its mid-height, well-behaved, flowers for yonks, stands to attention without needing staked and its hardy to H7.
Best of all I’ve just ordered FIVE 1-litre pots of them online for £22 – a brilliant solution to my garden and financial gaps – I’ll keep working on the ability one.
A staple for every gardener who appreciates foliage as much as flowers – Rosa glauca is easy to grow, thornless and, oh, we’ll let Louise explain all the other reasons why it’s her Great Plant this Month:

Are you wondering what to plant next in your pots? We’ve created a list of some of our favourite plants that will grow happily in a container. It might give you the inspiration that you need!

Gorgeous herb pots and this week – free labels!
Grab a handful of herbs every time you cook from these lovely herb pots and this week we’re GIVING AWAY a pack of herb labels worth £9.99 with each herb pot set. Just order the pots and you’ll magically get the labels added for free. What a fabulous gift for under £20!

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8 replies on “Plants to plug a summer gap”
Hi Caroline. What happened to the foliage of your alliums? Did you prune them to get them out of the way? I had read somewhere that like tulips, the foliage needs to ripen on it’s own and the foliage looks so sad by bloom time!
Hi Mardi, apologies for the tardy response, it’s a good question because allium foliage is a bit magical isnt it? I find it just sort of disappears on its own when the stems reach their full height. Normally by this time other things are sprouting around the alliums so the shrivelled foliage isn’t noticeable. So the answer is, I dont do anything and I suspect my laziness is probably good for the alliums as you suggest! Best wishes, Caroline
I’ve grown nasturtium Bloody Mary this year after a gap of a few years where I just got fed up with how much self seeding they do. They are beginning to flower now and looking lovely. Would not grow Briza maxima again as it dropped seeds by the thousand all over my front border. I am still pulling it up 2 years later. I have been considering chucking some poppy seed around too as have Pandora and Amazing Grey in packets.
Hello Rosemary, Laura here and thanks so much for the heads up on both the nasturtiums and the grass’s propensity for self seeding. I must say that I have had an issue of self seeding in the past with the smaller Briza media so had already made a note to site the Briza maxima carefully but you experience has made me double down on this precaution! Looking forward to seeing my Bloody Mary flower after your description- you’re obviously a bit ahead of me … good luck with poppies – we still need more rain here to get direct sown seeds to germinate but hopefully you’ve been blessed with a bit more than us. Best wishes Laura
I love reading your BLOG when I have had far too much Chardonnay because it reminds me of the « fillers in » which I have forgotten – Mea Culpa ( not surecwhat that means, but Hey Ho I think you have invited a mini-comment from me?????
Hello Susannah, you sound just like Caroline when she’s had one too many!! Lovely to hear that like us you don’t take your gardening too seriously, it really doesn’t matter what your garden looks like to the outsider as long as it brings you pleasure – there’s always next year to get things perfect. Best wishes Laura
Hello you three,
This year I experimented with supporting my hardy geraniums. What a success! I used, mainly tripods of natural pea stick type wood, tied at the top and around the sticks lower down.
I only have a smallish garden and before they used to flop over anything nearby. I have: Rozanne, Blue Cloud, and Orion, amongst others. This method just elevates them to be even more eye catching and the flowers cascade from top to bottom. A winner in my eyes! ⭐️
Oh well done, Sally, that sounds perfect! Elaine here, and much as I love hardy geraniums a lot of them do flop all over the place. I’ve found upturned wire hanging baskets very useful for the lower kinds like G. Wargrave Pink but your idea would work really well for the slightly taller varieties like Rosanne. Thank you so much for writing in and sharing this tip – I might go out and do it myself right now!