They keep growing

Remember a couple of winters ago when I grew some cactus from seed? You may also remember that I gave all of those seedlings away, as they were not cold-hardy enough for me to grow here. Then last year I started some cold-hardy cactus seed, but didn't tell you about it until the seedlings were bigger.


Then a couple of months ago I repotted the seedlings. Remember all of that? Well, they must really like their new pots because they are growing like crazy!

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Not bamboo growth crazy, but "slow and steady, wow look at how big they are now" crazy.



This one is probably my favorite because of its knobbiness:


Anybody have any idea of what species it is yet?

I had no idea they would get so big so quickly, as I thought cactus take years and years to start sizing up. The knobby one is almost as big as a golf ball now. Here are some shots with my fingers to give you a size reference:



That big one is almost 5" (2cm) tall!

These others are and inch and a half tall or so:




Although they're supposedly cold-hardy, I don't want to chance leaving them outdoors yet. I'd like to know what species I have before I try an overwintering experiment.

Having raised these guys from seed, I don't want to see that experiment end badly.


So indoors they'll stay for another winter.

I wonder how big they'll get by spring?


(If you have any guesses for what each of these species may be, please let me know in the comments!)

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Gerhard Bock (Bamboo, Succulents and More)  – (November 9, 2012 at 10:26 AM)  

Wow, they have grown! The one in the 2nd photo from the top looks like my claret cup (Echinocereus triglochidiatus).

Curbstone Valley Farm  – (November 9, 2012 at 11:05 PM)  

I have to say, I'm especially impressed. As a favor to cactus, I don't grow them. I'm one of those that's blessed with green thumbs out of doors, but cursed with brown thumbs indoors. I've drowned more cacti than I wish to admit to, but I never would have thought to try producing them from seed. These look especially healthy, well done!

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