cactus terrarium

I just got this terrarium with cacti and i was wondering what species the highlighted cacti are? C looks very interesting, A & B look similar but no idea.

Also, they seem a bit sad; any ideas on what I should do to make them happier?

They seem like they havent been watered in a very long time, should I fertilise them as well?

thanks

Comments for cactus terrarium

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Jun 24, 2020

Sorry
by: Jacki Cammidge, Certified Horticulturist

Cacti, even though I love and respect them, are not in my zone of genius. I don't know all the names, only that they LIKE to be bone dry for most of the year, then get a good drink.

The risk with growing them long term in a terrarium, even one with the large opening like this one, is that there is no drain hole. That, and being enclosed, is their worst fear.

I would think seriously of moving them into individual clay pots so you can give them the soil conditions and air exchange they prefer.

Do not overwater them while they're in this terrarium. They won't like it, and it could kill them.

Likewise with fertilizing them. In their native habitat they don't ever get any kind of fertilizer, only water once a year.

This triggers their blooming cycle.

The best thing to do is to maintain their light levels for a few months, then think about repotting them in the correct cactus soil.

Don't make a whole lot of changes at one time, do one at a time, to see how they respond. Cacti are very slow growing plants, so it could take a while to see results.

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