Episode 104: strawberry saxifrage aka Saxifraga stolonifera
Saxifraga stolonifera ‘Maroon Beauty’. Photograph: Jane Perrone
Transcript
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I love strawberry saxifrage (Saxifraga stolonifera) so much I just had to dedicate a whole episode to this lovely plant: and question of the week concerns the beautiful dark-leaved foliage plant Zamioculcas zamiifolia ‘Raven’.
Pink leaf undersides on Saxifraga stolonifera ‘Tricolor’. Photograph: Jane Perrone
Strawberry saxifrage It’s one of those plants - like the rat’s tail cactus and the African violet and the ming aralia - that transports me straight back to the late 1970s early 80s. This plant was popular then, but had become rather neglected until the current houseplant craze got under way.
I am glad it’s back, because I love everything about it, from the scalloped, purple-backed hairy leaves to the red stolons that become festooned with baby plants trailing from the parent like so many leafy jellyfish: not to mention the tall flower spikes thrown up every summer, which are covered in teeny tiny white flowers like little butterflies.
Saxifraga stolonifera has a lot of common names, including strawberry geranium, strawberry begonia, creeping charlie, beefsteak plant, and mother of thousands. It also used to have a different Latin name, Saxifraga sarmentosa. Both those specific epithets, the second part of the Latin name, sarmentosa and stolonifera, refer to the plant’s habit of producing wire-thin stolons or runners, just like strawberries, on the end of which grow new plants. Once you have one plant, you’ll soon have plenty to share with friends and family
Strawberry saxifrage growing in Japan. Photograph: TANAKA Juuyoh (田中十洋) on Flickr.
Strawberry saxifrage is part of a relatively unusual subset of houseplants that can survive outside in a sheltered spot in temperate gardens: and there really aren’t a lot of those, other than Aspidistra elatior or the cast iron plant. But unlike the aspidistra, the strawberry saxifrage grows pretty fast, and within weeks or months it should be throwing out babies. Like the spider plant, you can leave these on to create a lovely chandelier effect, or let them drape onto soil until they root, then cut away the umbilical cord and make a new plant.
In their native Japan, they are known as yuki-no-shita, which translates to "under the snow,” and the leaves are eaten raw or used for tempura. More on that in this LA Times blog. There’s more on the edibility of this plant on the Plants For A Future website.
Strawberry saxifrage care tips
A dinky baby saxifrage newly potted up. Photograph: Jane Perrone.
Outside, they make great spreading ground cover in a shady spot, but do look out for slugs and snails which seem to love them. Indoors they will adapt to a wide range of conditions - obviously they can cope with unheated chilly rooms but will also be fine at higher temperatures. Mine are in terracotta pots on an east facing windowsill. They’ll enjoy relatively generous watering during the growing season, but mine are in terracotta to make sure they don’t get waterlogged. In terms of the potting mix, make sure it’s free-draining by adding some grit or perlite to a good quality houseplant soil. In the winter cut back on the watering as growth slows down.
The advice is usually to water from below if you can so that the leaves don’t get splashed, but of course outside they are going to get wet, so I don’t bother too much on this front. Feed with regular houseplant fertiliser “weekly, weakly”.
Strawberry saxifrage cultivars
The Saxifrage society website, lists a few cultivars, but this isn’t a plant with loads of different strawberry saxifrages to collect.
I have two at the moment, S. stolonifera ‘Tricolor’, and ‘Maroon Beauty’. ‘Tricolor’ is wonderful - green leaves with edges dipped in white, and a pinkish red blush that waxes and wanes according to how much light the plant gets. ‘Maroon Beauty’ has darker olive leaves which are maroon on the undersides.
S. stolonifera ‘Maroon Beauty’. Photograph: Jane Perrone.
‘Kinki Purple’ was collected by well-regarded plant hunters Bleddyn & Sue Wynne-Jones of Crûg Farm Nurseries in the Kinki Peninsula in Honshu Japan in 1997. This one has dark green leaves with a silvery tracing all over them.
Crûg Farm also has a cultivar called ‘Hime’ that I haven’t seen let alone grown: it’s a more compact cultivar which I’d love to get my hands on. There’s also S. stolonifera ‘Shichihenge’ which seems one of those Atlantis plants that only exists on the net as photographs, but it’s mostly cream and looks amazing. ‘Hsitou Silver’ has extra silvery leaves but is similarly hard to source and ‘Harvest Moon’ has pale leaves.
Buying tip: this plant is often sold by nurseries that specialise in outdoor plants, and it tends to be cheaper to buy that way than if it’s marketed as a houseplant.
Question of the week
Listener Chris wanted to know whether dark-leaved Zamioculcas zamiifolia ‘Raven’ requires more or less light than the green-leaved species, and what the alternative name ‘Dowton’ was all about. I got in touch with Justin Hancock of Costa Farms in the US who told me:
We've found no difference in lighting preferences between Raven and traditional Zamioculcas. It tolerates equally low light. We've also found no appreciable differences in it watering needs. Culturally, it's no different than the species -- so if a consumer can grow the species successfully, they shouldn't have any different experience with Raven, other than its slower growth rate and the way the foliage changes color as it matures.
I also found a patent for this plant which lists its official name as ‘Dowon’ although this does seem to have been mistyped as ‘Dowton’ as it’s also given this name on many nursery sites: but the name it’s usually marketed under is ‘Raven’. They are, however, the same plant.
Want to ask me a question? Email ontheledgepodcast@gmail.com.
This week’s sponsor - Ecofective
Thanks to Ecofective for supporting this week’s show. Ecofective is a UK company that’s passionate about helping you raise beautiful plants with products that have minimal impact on the environment: Ecofective’s houseplant products work brilliantly to keep your leafy charges in great shape, but they’re also safe for use around children pets and bees.
I’ve been using their Houseplant Boost fertiliser for over a year now, and I love how convenient it is - no fiddling about working out how much you need to put in your watering can, just pour direct onto the soil. It’s 100% natural and organic, and You can use it on most houseplants including indoor grown peppers, tomatoes, chillies and herbs. And their Houseplant Defender spray is perfect for tackling pests like aphids and red spider mite, and also helps to control powdery mildew: and it’s pesticide free.
Ecofective’s products are available online, at selected garden centres and Homebase stores across the UK: Find out more and locate your nearest stockist at ecofective.uk.com.
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CREDITS
This week's show featured the tracks Roll Jordan Roll by the Joy Drops and Overthrown by Josh Woodward. Ad music is by the Heftone Banjo Orchestra with Whistling Rufus. All tracks licensed under Creative Commons.
Logo design by Jacqueline Colley.