Sticky

The reason that I first acquired my carnivorous plants was to keep the flies under control in the limery – a natural solution that is also fascinating. The pitcher plants, which featured in last week’s Three Things Thursday are good for controlling large flies, but when it comes to fruit flies and little black compost flies, you need a sundew or two.

The most common and easiest to grow in a UK conservatory is probably the Cape Sundew (Drosera capensis). The plants have linear leaves and either pink or white flowers, the former associated with leaves with red highlights. Mine are always covered in little flies:

And then, if you’ve got some hanging space that’s high enough so you won’t walk into it (and honestly, you really don’t want a face full of this), there’s my favourite – Drosera dicotoma, the leaves of which can reach 30cm. Mine had a bit of a set-back earlier in the year when I was on holiday, but has now grown some new fresh leaves which haven’t had much time to catch many flies, although it is capable of snaring big ones.

So, who needs chemicals or fly paper, when nature can solve the problem for you?

 

Cohabiting carnivores

When the limery was first built, we noticed that flies had begun to congregate in there and one of the builders suggested getting some carnivorous plants. I liked this idea – no unpleasant chemicals plus interesting specimens to care for.

In the past year I’ve had some successes and some failures – sadly not all of my plants have survived, but I have learned a lot, including what types of carnivores like the conditions available and the fact that slugs eat pitcher plants. It is because of this latter fact that my Sarracenia purpurea has a hole in the lower part of one of its 2015 pitchers (each pitcher in this species lasts a couple of years). As a result no liquid can accumulate in there, but it has attracted a resident – a spider. So I have an insectivore living inside an insectivore!

As you can see, it’s living perilously close to a Venus fly trap that would be perfectly capable of catching it. It has spun its web around all four of the plants in the water tray, but it must be very careful as it does this. This co-habitation has been going on for several weeks now and none of the organisms involved seem to be adversely affected, so I’m not interfering, although I have removed the Sarracenia seedling now as it was getting swamped by the web.

Looking round at my carnivores, it’s obvious how common co-habitation is… well, actually it’s really that sundews seem to be particularly keen to move in with any other carnivore except the Venus fly traps. What is particularly nice is that some of the young sundews must have arrived as hitch-hikers, because they are not species that I have bought.

In terms of doing their job, I’m pleased to report that fly capture is proceeding well – the pitcher plants (and spiders) catch big houseflies and the sundews catch the little black flies that seem to be associated with peppers growing in pots and whitefly that like the melons. I’m going to put the most rampant droopy Drosera dicotoma in a hanging basket, as its long leaves are getting rather out of hand on the window sill and it will then have maximum access to little flies.

And it looks like there may be more offspring to come – assuming Sarracenia is self-fertile, I am hoping for some seeds from this lovely specimen:

And there are likely to be yet more sundews as the Drosera capensis are flowering all over the place and forming seed pods

Now isn’t that so much more fun than fly sprays?

 

More carnivores

I’ve rather fallen in love with the carnivores in the limery… not so much the Venus fly traps (which I expected to be very exciting, but are, in fact, fairly dull), but the Sarracenias (pitchers) and Droseras (sundews). These amazing plants are thriving – they have all grown since their arrival and have been working hard, with the sundews being particularly effective at catching small insects and the pitcher consuming the larger flies (houseflies, horseflies etc).

Unfortunately we have had rather a lot of flies indoors this year because the field behind us has had livestock in it for the whole summer. So, despite the pitcher doing its best – with a little help from the Nepenthes tropical pitcher, which needs to be kept in a vivarium to maintain high humidity – we still have rather too many insects for my liking. Which has given me a great excuse to get some more plants (it was always on the cards once the limery was finished). So, let me introduce the four newbies:

Sarracenia purpurea ssp. purpurea - Purple pitcher plant

Sarracenia purpurea ssp. purpurea – Purple pitcher plant

Sarracenia flava - Yellow pitcher plant

Sarracenia flava – Yellow pitcher plant

Sarracenia catesbaei - S. flava x purpurea

Sarracenia catesbaeiS. flava x S. purpurea (hybrid of the two above)

Cephalotus follicularis Albany carnivorous Pitcher Plant

Cephalotus follicularis Albany carnivorous Pitcher Plant

The Sarracenias are bigger plants than the one I originally bought and are in 9cm pots, but should grow significantly bigger. The Cephalotus is very small as yet – only a few centimetres across – but also should get much bigger.

The structure and morphology of all these plants fascinates me. I could spend hours simply looking at them in wonder…

I now can’t remember which of the builders it was who suggested carnivorous plants, but whichever one it was he truly sowed a seed for me…

Danger! Carnivores!

Because glazing of the limery is not complete, if has turned into a trap for flies – despite the huge hole in the door, the flies only seem to be able to get in and not to get out. On the other hand, butterflies and damselflies seem able to exit without a problem. One of the builders noticed the current fly infestation and asked whether I might get some carnivorous plants. It wasn’t something I had planned to do, but I thought it was a good idea. So, without further ado I searched the internet, placed an order and today the limery has seven new occupants:

Dionaea muscipula - Venus flytrap

Dionaea muscipula – Venus flytrap

Dionaea muscipula 'Akai Ryu' - Venus flytrap 'Red Dragon'

Dionaea muscipula ‘Akai Ryu’ – Venus flytrap ‘Red Dragon’

Drosera capensis - Cape sundew and Drosera capensis alba - white Cape sundew

Drosera capensis – Cape sundew and Drosera capensis alba – white Cape sundew

Utricularia bisquamata 'Betty's Bay'

Utricularia bisquamata ‘Betty’s Bay’

Sarracenia purpurea venosa

Sarracenia purpurea venosa

Nepenthes ventricosa x talangensis

Nepenthes ventricosa x talangensis

One of the sundews has already caught a fly (look closely at the one on the right and you’ll see it), but they have a long way to go yet…

We have glass in the roof (but not the door) and lots and lots of flies

We have glass in the roof (but not the door) and lots and lots of flies

I’m so excited at the prospect of growing these (and other) unusual plants.

 

 

 

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