Many pesticides will also kill arachnids.
Once established, it would be a good idea to introduce insect eating creatures (whether larger insects, or small vertebrates) to help keep pest populations under control.
Jen- My Grow List: http://www.terraforums.com/forums/sh...00#post1154900
"Teaching a child not to step on a caterpillar is as valuable to the child as it is to the caterpillar."
I would not recommend any free range scorpions in a greenhouse situation. If they happen to establish themselves, you'll eventually wish you hadn't put them in there. Constant stings every time you move plants around will get mighty old, even from relatively harmless species. Most tarantula species would also be unsuitable with the possible exception of some of the arboreal species like Avicularia. As Dragoness points out, with arachnids in a greenhouse you can never use any pesticides at all if you wish to keep them alive. Have you thought about the fact that these are shy nocturnal animals that you'll almost never see unless you're rummaging around in there ? Escape is also something to consider. The greenhouse will have to have to be sealed with silicone at every possible joint and gap. You'll also want to install a double entryway in order to avoid any creatures from sneaking out. Even with these precautions in place, it's almost 100% that likely that at least a few of these critters will find a way out. How do you plan on feeding these animals in the greenhouse ? You can't just release crickets in there, as they'll cause major damage to the plants. You'll have to have large, established free range colonies of roaches running about in order to keep these animals fed. There's a lot to consider when starting an enclosed ecosystem like this.
What about stick-insects and praying mantids?
As far as stick insects go, I can't think of a worse idea than releasing a bunch of plant eating bugs into a greenhouse. Mantids may be possible but again, you run into the problem of supplying adequate food for these free roaming carnivorous animals.
Last edited by Cthulhu138; 10-03-2014 at 05:26 PM.
Frogs! Frogs frogs frogs! My frogs love bathing in the Nepenthes pitchers, it's great.
I've heard that some people put bunnies in their greenhouses to create heat at night. You'd probably need a couple. You can get them very cheap from the right place, I'm sure. And one upside to bunnies is that they're bunnies as well, so you can pet them and be really happy.
You don't say how large your greenhouse will be but if its large enough to have a small pool you could keep fish, aquatic amphibians and aquatic Utricularia. Another thought is keeping the Cuban tree frog aka Osteopilus septentrionalis. Its hardy and large enough so that you should see it occasionally.
Have you considered spider mites or scale? I know a few people who successfully raise healthy colonies of these arachnids/insects in their greenhouses year round.
Last edited by mato; 10-03-2014 at 03:19 PM.
Truth as Circe. Error has transformed animals into men; is truth perhaps capable of changing man back into an animal?
As for mantids, I think that is your best option for an invertebrate. You can easily feed them by ordering blue bottle fly and fruit fly pupae or eggs. You can even raise flies yourself as a constant food source. Mantids can be bought in their egg cases or at any other life stage. You will eventually have many of them but they will keep themselves in check by eating their siblings. You will need a large enough greenhouse or you'll end up with one fat mantis. I would suggest a double door to prevent escapes and a body inspection to prevent them from being mistakenly taken out on your back.
And bunnies? How can they create enough heat for a whole greenhouse!?!?! I used to keep bunnies and they need warmth or they get cold. Also, they will eat plants and with two, they must be fixed or they will also take over the green house . . . they do breed like "rabbits"!
Last edited by Acro; 10-03-2014 at 05:52 PM.