Episode 116: Hippeastrums (aka amaryllis)
Transcript
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Hippeastrum bulbs are the Barry White of the indoor bulb world - massive and flamboyant, and maybe just a teeny bit cheesy, but in a good way! They tend to come into flower about Christmastime, but it takes careful timing to make sure they are in flower at the right moment.
This week I plant my bulbs and discuss how to grow them successfully for a festive display - and find out how to get them to flower again next year - and scroll down for a question about mushrooms growing among your houseplants.
As you listen, check out the Hippeastrum care points below:
Hippeastrum ‘Red Pearl’ from Peter Nyssen.
Hippeastrums are often wrongly labelled as Amaryllis, but Amaryllis should really refer to the more refined and delicate looking Amaryllis belladonna, which comes from South Africa and is usually called the belladonna lily. Hippeastrums are from Latin America and have been hybridised to produce a huge range of flamboyant trumpet-like flowers on a tall meaty stem.
When it comes to choosing a cultivar, it really depends on your aesthetics - there are really showy ones like the deep crimson ‘Red Pearl’ and the frankly hideous (sorry!) double white and red striped ‘Dancing Queen’, and more subtle affairs such as the pale greeny-white ‘Lemon Star’ and the spidery cherry red and lime green ‘La Paz’.
There are loads of places to buy bulbs mail order: I chose one ‘Red Pearl’ and one ‘La Paz’ and I bought them from Peter Nyssen in the UK, but if you want to get a Hippeastrum flowering for Christmas it is probably advisable to buy in person from a garden centre or shop - you often see boxed bulbs for sale in supermarkets and other shops. (That said it’s a very cheering thing to have a Hippeastrum in flower in a gloomy January, and mail order stores such as Peter Nyssen tend to have a wider range of cultivars, so if they are still in stock online at a reputable bulb supplier, do snap them up!)
If you are choosing bulbs in person, pick the biggest ones you can find and make sure you give them a good squeeze to check they are firm (yes, you can now evoke a mental image of you squeezing Barry White!) and have no big splits, or signs of mould or rot. A big cluster of meaty roots coming out of the bottom of the bulb is another really good sign.
If you want Hippeastrums to bloom in time for Christmas, it’s a bit of a gamble - most of the labels will say flowers within 6-8 weeks, but inevitably it varies depending on the conditions you have, the cultivar and how carefully you tend them.
My Hippeastrum bulbs soaking in tepid water. Photograph: Jane Perrone.
Hippeastrum ‘La Paz’ from Peter Nyssen.
Planting Hippeastrums
Before you plant, the bulbs need 12-24 hours of soaking - you can do this by finding a wide vase and half filling it with tepid water, then putting the bulb in the top, making sure the roots are all in contact with the water.
Contrary to appearances these monster bulbs do need a monster pot - a container that is quite tall but only slightly larger than the circumference of the bulb is ideal - terracotta works well or you can use plastic and put the pot into a cachepot - just make sure that the inner pot, whatever type you choose, has drainage holes.
Anna Pavord (author of the wonderful book ‘Bulb’) suggests a 2-1 mix of multipurpose compost and grit, so I used Sylvagrow peat free with a few handfuls of grit added in. Make sure this is at room temperature, not straight from the shed so the bulb doesn’t get a nasty shock: pre-moisten it so it’s ready to go and you won’t disturb the newly-settled compost by watering straightaway.
Make sure that top of the Hippeastrum is poking out above the rim of the pot, and that about a third to a half of the bulb emerges above the soil’s surface. Fill in around the sides with compost and firm it down, leaving space at the top of the pot for water.
The bulbs need a warm room in bright light away from draughts - 21C is ideal, but if temperatures are a little cooler your bulb may take longer to bloom. The flower stem emerges first followed by the strappy leaves: keep the soil moist but not wet. Turn the pot a little every day or so to ensure that your flower stem doesn’t end up leaning! You may need to stake it if it becomes very top-heavy.
Once the buds are starting to open, the advice is usually to move the plant to a cooler room - say 16C - to make the flowers last longer, but in my view I’d rather get a shorter time enjoying my flowers in a prime position!
How to get Hippeastrums to reflower next year
Once the flowers are over, cut them off individually and once all the flowers are done, cut the stem off to the base. Keep feeding and watering the plant until late summer: you can keep it indoors, or if you have outside space you can put them outdoors, but don’t forget to water them if it’s dry!
In September stop watering them entirely and the leaves will shrivel: they then undergo a dormancy period for a couple of months when they need to be cool and dry. Bring them inside or to a warmer room around mid-October. and commence watering and feeding again, and they should start to regrow and - with a bit of luck - flower again!
Leucocoprinus birnbaumii growing at the base of a Dieffenbachia. Photograph: Jane Perrone.
Question of the week
Taylor wanted to know whether to be concerned about the mushroom growing in the pot with his Colocasia. Fungi are everywhere, including in our houseplant soil, so it’s inevitable that from time to time you will see their fruiting bodies - in other words, mushrooms - popping up from the surface of the soil. Mycorrhizal fungi are vital to plant health and are probably present in your soil, but these don’t tend to be visible from the surface.
Leucocoprinus birnbaumii aka the pot plant mushroom aka plant pot dapperling is the most common mushroom that loves conditions in houseplant pots - it is not going to do any harm to the Colocasia, as it has a totally different energy source - they break down organic matter rather than photosynthesise. Mushrooms are most likely to grow in damp soil with a high organic matter content, so in some cases it may indicate that the soil is too wet. If you are worried about children or pets getting hold of the mushrooms, L. burnbaunmii is toxic), then just remove the mushrooms as they emerge. If not, just enjoy their beauty!
Want to ask me a question? Email ontheledgepodcast@gmail.com. The more information you can include, the better - pictures of your plant, details of your location and how long you have had the plant are always useful to help solve your issue!
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CREDITS
This week's show featured the tracks Roll Jordan Roll by the Joy Drops, Rashem Pidity, Pokhara by Samuel Corwin, Chiefs by Jahzzar, and Overthrown by Josh Woodward. Ad music was Whistling Rufus by the Heftone Banjo Orchestra. All tracks are licensed under Creative Commons.
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