Tag Archives: arisaema tortuosum

Bulbs of December. In time for Christmas.

While the rhodohypoxis and Sinningia (syn Gesneria) cardinalis flower on in abundance, it is time to turn to the bulbs that have made their annual appearance in this month of December.

Sprawling might be the best description of Albuca nelsonii in flower

We have always grown the large Albuca nelsonii and its green and white bells have often featured in any Christmas floral staging I do because it cuts well. I included it when I planted the Court Garden and I worried about its somewhat unwieldy habits. Staking those tall, curvy flower spikes was… challenging, shall I say? All that changed when I looked up the albucas in an attempt to get a species name on its half-sized cousin with very similar flowers. I found a reliable site that described the characteristic of the plant that the flower spikes naturally become pendulous to prostrate. Why fight nature? I now allow them do as they wish.

Apparently useful for warding off sorcerers when mixed with one of the red hot poker species

Randomly, I also found the information that an “infusion made from Albuca nelsonii bulbs and tubers of Kniphofia species, known as icacane, is taken as an emetic as protection against sorcery.” Just in case you need that handy hint.

Albuca batteniana, I believe. If you look carefully, you will see a few tufts of orange that appear as the flowers open but disappears soon after.

Often mistaken for A. nelsonii is its half-sized cousin. As far as I can make out, this is Albuca batteniana. The little orange tuft – actually the calyx that holds the petals – that appears at the top of the flower spike when it first starts opening is a distinctive characteristic. The flowers, bulbs and foliage are very similar to A. nelsonii and it is a better-behaved garden specimen in that somewhat suburban, tidy manner. Its flower spikes do not lie down on the job; they stay obediently erect. It is a good garden plant which I have used in the twin borders but it doesn’t make me smile as the more exbuberant and wayward big A. nelsonii does.

Dainty but prolific Cyanella capensis

These days, the abundant blue mist that shrouds the rockery is not the bothersome geissorhiza, about which I have written often. It has taken years for me to encourage the dainty Cyanella capensis with its tiny blue flowers across a long blooming season. Only now am I thinking I may be getting too much of it. At least its bulbs are large and easy to remove. I just have to be a bit more vigilant on deadheading it because it is spreading by seed, not bulb.

Arisaema tortuosum holds its head above the foliage, unlike many of the arisaemas. It also spreads too enthusiastically if the seed heads are not removed.

I have missed the arisaemas in previous months’ bulb articles. We have a reasonable range of arisaemas, some of which are much more choice than others. But it is really only the easy and common A. tortuosum that makes me think of them as the meerkats of the plant world. I deadhead them thoroughly and weed out strays because I do not want the alert meerkats of plant world all over the place but in their allotted space, they are an annual delight. And quite bizarre.

There is not much subtlety in Gladiolus daleni

Gladiolus – there are a few that I appreciate, mostly species. And a few that I tolerate. The overbred, overblown hybrids of Dame Edna fame have never appealed but I accommodate the ones that date back to Mark’s mum. As she died back in 1986, I feel a begrudging respect for those that have survived down the years and they seem to fit in okay to the exuberant and largely uncurated floral abundance of the Iolanthe garden. Gladiolus daleni has been in flower for a few weeks now but the star this week is the gorgeous red Gladiolus papilio X ‘Ruby’. One of the problems with gladiolus, though, is that they open their flowers in succession so no matter how attractive the freshly unfurled buds are, they share their stem with ones that have withered, browned and died. It seems a design flaw to me.

A legacy from Mark’s mother
The four gladioli on the left are all survivors from Mimosa Jury, top right is the amazing burgundy of papilio x ‘Ruby’ and beside it the usual species form of Gladiolus papilio. Lower right is daleni which is clearly a breeder parent of the one on its left which is larger and more coral coloured with a less obvious yellow flare.

The topic of gladiolus reminds me of this passage I wrote in a book review some years ago. I am still quite proud of it. 

By the way, Penguin (Publishers) , it is time you dispensed with the auto spellchecker. The author of this book winning prizes for exhibiting her Gladys rivals a previous author counselling readers to throw out their Algarve. The author may have been using the colloquial term of gladdies, but even that is inappropriate for the text on page 164 and 165 where poor Gladys has her name taken in vain repeatedly. Gladiolus stands for one, gladioli for more than one. Gladdie is the vernacular, not the common name. Gladys is somebody’s grandmother.

What we call a Christmas lily here is Lilium regale

The first of the Christmas lilies is in bloom and the buds are fattening on the golden Aurelian lilies. But I think we will leave the lilies for January when the auratums star.

There are of course, other December bulbs in flower. That is a Phaedranassa cinerea above (great name!). From Ecuador, no less. I can’t think we grow many plants from Ecuador. And what we still call Urecolina peruviana (from Peru, presumably) but may be more accurately called Stenomesson miniatum blooms on. One day I might sort out which bulbs we have are South American as opposed to the majority that are from South Africa.

Stay safe and our thoughts go to Australians in this week. Mass shootings are so rare in this part of the world that it shakes our nations to the core when they happen.

The curious arisaemas

Delighted by A. dahaiense

Delighted by A. dahaiense

Not all flowers are beautiful, but my goodness arisaemas have curious flowers and equally peculiar propensities.

Arisaema ringens has been around New Zealand gardens for a long time – sometimes called Jack-in-the-pulpit though that is more correctly used for the American species, A. triphyllum. While A. ringens has handsome, glossy foliage, the flowers hide beneath in such seclusion that you are likely to miss them entirely.

The last twenty years have seen an influx of new Asian and Japanese species to the country, many of which have piqued the interest of collectors. Even now, the choicest ones are difficult to source – often more a case of who you know rather than where you can buy them. And if you get hold of them, some are very difficult to keep going, especially in garden conditions as opposed to nursery pots.

Arisaema tortuosum

Arisaema tortuosum

Not all are devilishly difficult. A. tortuosum is easy and will seed down freely, a bit too freely, we find.  It makes a big patch, maybe 75cm tall, with the green hooded flowers sitting above the foliage. We find it is perfectly happy in the border right beside the house on the eastern side where the only water it gets is run off from the adjacent path.

Arisaema speciosum

Arisaema speciosum

A. speciosum is another easy variety in semi shade. It has handsome foliage, lovely mottled stems and curious flowers in burgundy-brown that really do look like hooded cobras. But the issue is that the flowers are held beneath the foliage so unless they are planted on a slope or on a margin where you can see into the patch, you may miss the flowering season. The early summer blooming A. candidissimum is one of the prettiest forms and is not difficult to grow with its palest pink and white hooded blooms appearing before the foliage dominates. It also multiples well.

Mark's A. sikkokianum hybrids

Mark’s A. sikkokianum hybrids

Mark's sikokianum hybrids (3) - CopyAnd then there are the tricksy ones, few more so than the Japanese A. sikokianum with its phallic spadix and hooded spathe rising prominently above the foliage. It is a show stopper in spring, though definitely curious rather than beautiful. After many years of growing it, I can tell you that it is difficult. We have never seen it increase from the corm. Growing well, it will set seed but these need to be raised in controlled conditions because it will not seed down naturally here. Even then, the patches tend to get smaller with time, rather than larger. It was for this reason that Mark experimented with hybridising it, to try and get increased vigour. This is known as hybrid vigour, in a similar way that the controlled breeding of designer dogs can make the offspring a stronger genetic strain than the highly refined parentage of pure breds. It has worked for us. The offspring carry all the best characteristics of A. sikokianum but they grow more strongly and are reliable as garden plants. Few would pick the difference to the lead species, but we know they are actually hybrids.

Arisaema dahaiense

Arisaema dahaiense

For sheer bizarre appearance, the more recent acquisition of A. dahaiense has to take the cake. It is very peculiar and not a carnivorous plant, though it looks as if it should be. The mottled, frilly flange is particularly striking. Because we are gardeners rather than plant collectors, the fact that this large-flowered curiosity has settled down quite happily in the leaf litter of open woodland conditions is a real bonus.

Peculiar propensities?  Arisaemas are hermaphrodites. When they are young or growing weakly, they are male. Only when conditions are right and the plant is strong, do they become female and therefore capable of reproduction. Then if they need a wee rest, maybe after a season of prolific seed set or drought, they revert to male again. Is this a metaphor for the human condition, some may wonder. I could not possibly comment.

A. taiwanense seed

A. taiwanense seed

If you notice a vague visual similarity to the mouse plant (Arisarum proboscidium), the striped Arisarum vulgare or arum lilies you are correct. Though not close relatives, they are all aroids in the Araceae plant family. Arisaemas go dormant in late summer and grow from corms – often roundish balls or larger round discs, though speciosum corms can look more like something unfortunate that the dog has left behind. Some species set copious amounts of seed which can be attractive in itself in autumn, though it helps to know your species. I remove the tortuosum seed because it can spread too freely whereas the speciosum seed, while abundant, has not created problems for us.

If you really want to know more about this plant genus, the gold standard reference is currently still a book, a proper book, not the internet – “The Genus Arisaema” by Guy and Liliane Gusman.

Arisaema candidissimum

Arisaema candidissimum

010 - CopyFirst published in the December issue of NZ Gardener and reprinted here with their permission.