One of the best things about cleaning up the greenhouse in November is the color. Dallas isn’t known for brilliant fall foliage colors: with the exception of the occasional crape myrtle going red or purple, most of our tree colors range toward pastels. Carnivores, not being from the area, aren’t subject to the pastel rule, and occasionally go wild with late autumn color, as these Venus flytrap “Aki Ryu” cultivars demonstrate.
It’s not only flytraps going for brilliant color, either. The Sarracenia outside are also going into winter dormancy, and the S. leucophylla and its hybrids aren’t shy about brilliant patches of color as they’re shutting down. It certainly makes up for the temperate carnivores whose dormancy habits consist of going brown and shriveled in a week.
Due to its subject matter, this series of posts may be too silly and/or offensive for some readers, and some links will definitely be unsafe for many workplaces. Keep reading, and you’re on your own: we take no responsibility for your need for brain bleach.
Naturally, a toilet garden isn’t a garden without a commode, but a toilet garden without something in it is just an ugly porcelain structure that accumulates squirrel droppings and produces mosquitoes. Not that there’s anything wrong with this, if you’re particularly inclined to new taste sensations, but let’s stick with the project at hand. Last installment, we cleaned out a commode and made it more plant-friendly, and now it’s time to introduce the plants.
The biggest problem with working with a large porcelain structure is drainage. Even with bog-friendly plants, such a small area filling up with, say, a typical Texas gullywasher thunderstorm can be problematic for anything more terrestrially-inclined than water lilies, aquatic bladderworts, and Aldrovanda. The issue here is making sure that the tank and bowl retain water, but not too much water, and that depends upon your locale and general rainfall.
For most carnivorous plant growing in North Texas, the best thing to do with the water tank on a toilet garden is to seal it up. Plug up both the outlet where the flapper used to be, and the hole where the inlet valve used to reside, with rubber corks, wads of plastic, or anything else that strikes your fancy, and seal the plugs with aquarium silicone or plumbing-grade epoxy putty. HowEVER, should you live in Houston, Tallahassee, or any other locale with significantly higher levels of rainfall, having a bit more drainage might be desirable. The trick, of course, is to allow water to leave without taking planting mix with it. Let me introduce you to the bog gardener’s secret weapon, landscape fabric.
Many landscaper and gardener friends consider polyester landscape fabric to be of the devil, with many cursing its use in courtyards, garden edges, and all sorts of other locations where removing it five and ten years later is one’s idea of the perfect eternal punishment. Personally, I look at that perfect eternal punishment as removing Bermuda grass from a flower bed, but that’s only because Bermuda indirectly tried to murder me in 1982. I can agree with the nightmare that is pulling up buried landscape fabric, but for container gardening and terraria, it’s the perfect separation layer. For instance, for those wanting to put down a layer of perlite in a terrarium to encourage drainage, a sheet of some sort of separation layer is absolutely essential to prevent the perlite from floating to the surface with a stout rain. Likewise, it’s a cheaper, more durable and more ecologically friendly material for covering the bottoms of bonsai pots than window screening, and it does a much better job of keeping soil from running through the drainage holes. It can be cut with standard scissors, into just about any shape you want, and wadded, wedged, and prodded into irregular surfaces. I picked up about five rolls of a discontinued green landscape fabric, recycled from used soda bottles, about two years ago, and even with all of my recent projects, I should have to get more fabric around 2018.
In this case, one big sheet of landscape fabric goes down into the bottom of the tank, allowing water to run out the former inlet valve hole. Should you want to conserve water, or add to the total effect, simply plug that hole and allow water in the tank to run out through the outlet, and it’ll go straight into the bowl. Oh, won’t that be a lovely look during the first stout rain.
Now, the bowl is, strangely enough, easier to work with. In areas with lots of rain, just put a sheet of landscape fabric in the bottom, wide enough to retain soil, and leave the pipe intact. The U-bend in the bottom of the bowl will retain enough water to keep the plants in the bowl from drying out right away, and excess will drip out as the U-bend fills. If you’re not looking forward to snide comments about leakage and jokes about WOW! potato chips, then you can block up the pipe. Anyone with a five-year-old can make suggestion on great materials for blocking up a toilet bowl: my brother can tell the tale of trying to flush an empty toilet with buckets of silver paint (please don’t ask, as the statute of limitations only recently expired), but I know from personal experience that the best material around comes from dry cleaning bags.
Personal interlude: friends can’t understand why I can’t watch the IFC seriesPortlandia, even after I explain to them that “comedy is tragedy that happens to someone else.” Nearly two decades later, I can say that my signature Portland moment came one day in the spring of 1997, when my now-ex came down with a horrible bout of stomach flu on a Sunday morning. That’s bad enough in itself, but the toilet line to our floor and the two above us was completely jammed because one of my hipster neighbors had decided to entertain himself by flushing plastic dry cleaning bags down the john the night before. Since this was a Sunday, the owner of the building first told us that we’d have to wait for work to be done on Monday, and begrudgingly called for her maintenance man, also known as her nephew, to come out and take a look. He showed up in a suit and tie, as he was he was heading to the Portland Opera, and told us that he couldn’t do anything before he had to be at his event, because our building handyman and plumber didn’t want to ruin his new shoes. It was only upon pointing out to the owner that a nonfunctional toilet line made the apartment building unfit for human habitation, and Oregon law required that the property owner would have to put up her tenants in hotel space until such a time as repairs were made, that she relented and paid Sunday rates for a real plumber. Her nephew got to the opera on time, my ex had use of a functional toilet, and the hipster neighbor apparently was still there, flushing grocery bags this time, after we finally escaped about six months later.
With that done, it’s time to start putting in plants. Atop the landscape fabric went about a liter of perlite, and then another layer of landscape fabric to keep it in place. Immediately after that went just straight peat. You can add sand to the mix, but that not only adds significant weight to the final planting, but it’s not really necessary.
And the plants? Never let it be said that studying ikebana techniques for live plants never paid off. It would seem to make perfect sense to put short plants in the tank and big flowing ones in the bowl, but planting tall ones such as Sarracenia in the bowl would block off and prevent appreciation of any smaller plants behind them. I finally opted for three species of Sarracenia in the tank to keep up the Heaven/Man/Earth balance necessary for a decent ikebana arrangement. Those wanting to set up an indoor arrangement for tropical species might want to invert this, with a Nepenthes pitcher plant draping from the tank while the bowl contained pygmy sundews or Cephalotus. It’s completely your call.
The second is a species not seen as often in carnivorous plant collections because of its slow growth and fussy temperament about low humidity. Sarracenia minor has more in common with its very distant relation Darlingtonia californica on the west coast of North America than with most of its cousins in the southeast. In both species, they have deep, dark hoods and small transparent windows (officially known as fenestrae) along the back of the hoods, so insects inside the hood fly toward the fenestrae, bounce off, and get trapped within the pitcher. This one is three years old, and it’s only now coming into its own: when carnivorous plant experts refer to this species as slow-growing, they aren’t kidding.
The third is so obvious that it shouldn’t need an introduction: Sarracenia leucophylla, the white pitcher plant. The tallest of the North American pitcher plants, considering how much these glow under a full moon, its placement here should be obvious.
Before finishing up, take into account a very important consideration about planting. When putting in plants, take into account both growing habits AND the possibilities of soil settling after a while. I recommend filling the tank and bowl with wet sphagnum, letting it drain for a bit, and then adding more water to fill any air pockets. Also, unless you like cleaning up peat stains around your new planter, try to keep the soil in the bowl and tank at least two centimeters below the edge. This way, unless you’re getting the classic Texas or Michigan thunderstorm, incoming rain has a place to go without washing out plants. When you live in a place that can get ten centimeters of rain within 30 minutes, you have to take these things into account.
For the bowl, its U-bend makes it perfectly suited for one particular carnivorous plant that loves moisture but hates having soaked roots. I’m not saying that toilets were designed for growing Venus flytraps, but you have to wonder, you know?
Meanwhile, while all this was going on, I looked up to find an observer other than the anole lizards running around the back yard. Our very own Cadigan had to add her commentary, and give me her absolute best GrumpyCat impersonation.You don’t have to be a telepath to know what she’s thinking right now: “Oh, when Mom gets home, you are SO dead.” Naturally, she had to lead the Czarina to the bedroom window, as if to say “Looooooook at what heeeeeeee diiiiiiiiiid…” With a cat like this, I don’t need children.
No, the interesting part should be reading the comments on the io9 article, and the fact that the commenters didn’t take advantage of a great resource on raising carnivores. Instead of general kvetching about how “I had a Venus flytrap, but it died,” they could have been poking around on sarracenia.com and possibly learning why their flytraps died. (Or, judging by one comment, learning that flytraps go dormant during the winter, so that presumably dead flytrap is just waiting for the spring.) That, right there, explains why so many of us are so passionate about carnivores: once we learned the basic secrets, all we really want to do is share what we’ve learned so that the flytrap lament doesn’t have to repeat over and over.
In any case, I think it’s time to update that old “Gothic Beauty” column on the (now) eight surefire ways to kill your Venus flytrap, on the idea that avoiding all of those tips will greatly improve the odds of its survival. Watch this space.