Why you should be growing the delicate, scented pelargonium

Clare Foster meets Ursula Key-Davis of Fibrex Nurseries, home to the UK’s National Collection of pelargoniums, and finds out about the best varieties and how to grow them

‘Some of the species and species hybrids are wonderful plants that produce masses of delicate blooms,’ she says. ‘But many of them are real collectors items that aren’t stock items in the nursery – we sell only a few of them each year.’ In colours ranging from darkest purple and maroon to palest creamy yellow, the flowers are like miniature butterflies – and the foliage, often scented, can vary hugely, from thick and succulent to fine and skeletal. Ursula’s particular favourites include P. trifidum, P. ‘Lawrenceanum’, with velvety purple petals, and P. ‘Ardens’, with its crimson and black f lowers. ‘Pelargonium trifidum is stunning,’ says Ursula. ‘It starts off as nothing and grows like a triffid. The blooms are creamy white. And ‘Lawrenceanum’ has night-scented flowers on arching sprays.’ Be aware, however, that this plant will have a period of dormancy in winter when it drops its leaves.

Among the scented-leaf pelargoniums, she recommends ‘Orsett’, which has pink flowers with darker markings and foliage with a ‘sharp, clean scent’, and ‘Grey Lady Plymouth’, which has silver-grey foliage and mauve-pink blooms. There are also some real curiosities in the collection. P. gibbosum has extraordinary yellow-green flowers, while P. appendiculatum has star-like apricot-tinged blooms. P. caffrum ‘Diana’ is a real oddity with fringed pink flowers. ‘My mother picked it out as a seedling and named it after her botanist friend, Diana Miller,’ says Ursula. ‘Like her, I am drawn to unusual things, so I keep all the weird and wonderful seedlings.’ It is this that makes the collection so interesting – as well as the fact that the nursery works with a team of amateur breeders. ‘They are typically men of a certain age, working in their own greenhouses and sending plant material in Jiffy bags,’ explains Ursula. ‘It means we can think outside the box – some commercial plants that have breeders’ rights are so boring.’

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Pelargonium ‘Lawrenceanum’ has night-scented flowers

SABINA RÜBER

How to grow pelargoniums

Pelargoniums are tender perennials that need to be brought inside during the winter, so they are good candidates for growing in containers. Flowering from June until the first frosts, they can also be used as summer bedding plants. ‘Most pelargoniums are easy to grow, but you mustn’t over-water them,’ says Ursula. If growing them in pots, plant them into multipurpose compost and feed every few weeks with high-potash liquid feed, deadheading when needed. In September or October, bring into a cool, dry place and cut back by half. ‘At this stage, you can almost stop watering them,’ advises Ursula. ‘You may need to water once or twice over winter, but that’s it.’

The pelargonium collection is open to the public each year from May to September. Whether it is the scented-leaf types that entice you, or the delicate flowers of the species plants, or the classic zonal pelargoniums, you will come away with a new passion. And because they are easy to propagate from cuttings, your collection will soon be bursting out of your greenhouse or conservatory in a very satisfying way.

Fibrex Nurseries sells pelargoniums by mail-order from March to September, but due to unprecedented demand this year, they have run low on many varieties. For details, visit fibrex.co.uk.