Episode 226: Q&A special
What’s wrong with Summer’s Schlumbergera?
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I answer a new batch of listener questions covering everything from a bird of paradise with wrinkly leaves to a Thanksgiving cactus with bumpy bits.
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Check out the show notes below as you listen…
Chopping a Philodendron ‘Florida
Ange wanted to know how and when to chop and prop her plant as it’s currently a single vine.
Philodendron ‘Florida’ is thought to be a hybrid between Philodendron pedatum and P. squamiferum - they have pedate leaves - ie they look like a bird’s foot. ‘Florida Ghost’ is a variegated sport that’s still rather rare.
The pic just above shows the different parts of the stem - click on it to see an enlarged copy. This Philodendron produces alternate leaves, and the point where the leaf stalk ((petiole) joins the stem is called the node. Just above the node, on the opposite side to the petiole, there’s a little bump called an axillary bud. When a stem gets chopped, the growth hormone is redirected to these axillary buds, causing them to grow.
Check out the picture to the right to see where to chop (click to enlarge): essentially you need to chop just below a node, and trim that cutting to just above a node.
How to make an Aspidistra happy
Gwyneth’s Aspidistra elatior is not looking happy - take a look at the pic to see what is going on!
Aspidistra does not like being repotted often, but removing the rootball from the pot to check out what the roots are doing should not cause a problem.
Aspidistras hate hot dry air from heating systems, so do not leave them close to vents in winter. Gwyneth’s plant was in a self-watering pot, which - depending on the substrate it is planted in - may be making the roots unhappy. I suggest moving it to a plastic or terracotta pot where you can water on demand.
Always check the undersides of Aspidistra leaves for red spider mites with a botanist’s hand lens as this can often cause these plants to look sad, even if it’s a fairly minor infestation.
For more on red spider mites, listen to On The Ledge episode 102.
For more Aspidistra advice, check out On The Ledge episode 138.
A wrinkly bird of paradise
Debra got in touch about a bird of paradise aka Strelitzia whose new growth is turning out wrinkly.
It’s in a NW facing window, and I suspect the plant is not getting enough light, which has a knock on effect on watering. I’d gradually move this plant to a brighter spot.
Soaking the plant then letting it drain, rather than more regular dribbles of water that do not wet the whole rootball, will help the plant to grow properly.
Summer’s poorly Schlumbergera.
Poorly Thanksgiving Cactus
Summer sent in pictures of her Thanksgiving cactus aka Schlumbergera truncata which is about a year and a half old - it flowered beautifully then started to develop round marks on the cladodes (the flattened stems of the plant).
I fear this is some kind of virus - there are various viruses Schlumbergera and other forest cacti can get, including Tomato Spotted Wilt Virus and Cactus Virus X. Sadly there is no cure for these viruses at present.
Such viruses can be spread from plant to plant in various ways, including through sap-sucking thrips moving from one plant to another.
As this plant is fairly new rather than an heirloom, I would not risk keeping it around in case it infects other plants.
Other things can cause lumps and bumps on these plants: scale, which looks like brown discs and will move when pushed with a fingernail. Brown patches can also be caused by physical damage, or ‘corking’ on lower stems on older plants.
Find out more about forest cacti in On The Ledge episodes 84 and 85.
Everfresh tree update
In the Q&A special in episode 201, I got asked about the everfresh tree - Pithecellobium confertum - seemingly available in Japan and Singapore and surrounding countries, but not Europe or the US.
Jack asked if I had had any luck finding this plant since, and the simple answer is no - although James Wong Aka @botanygeek did post on Insta about this plant a few weeks ago.
I asked James where he got his plant, and he said it was seed from a friend - and he suspects that the reason why these plants have not arrived in Europe or the US is because the seed needs to be sown very fresh (I guess the clue’s in the name?)
But surely this is not an insurmountable problem for growers? I guess we’ll see in the next few months and years whether this plant catches on globally, but for now most of us are limited to staring at images of it on social media. You can take a look at the seemingly variegated specimen I found on Instagram here.
THIS WEEK’S SPONSOR
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CREDITS
This week's show featured the tracks Roll Jordan Roll by the Joy Drops, The Road We Use To Travel When We Were Kids by Komiku and Namaste by Jason Shaw. The ad music was Dill Pickles by the Heftone Banjo Orchestra.