On Nov 10, 5:39*pm, Coffee's For Closers Usenet2...@THE-DOMAIN-
IN.SIG wrote:
I have some miscellaneous cacti that need repotting. *So I am
looking to find out the appropriate size to upgrade to.

For example, some are small, in 10 centimetre (4 inch) diameter
pots. *Some are in pots about twice that size, but are probably
even more root-bound, since they have been in those for longer
time.

The small ones are inside, on a window ledge, and the larger ones
are outside.

There is also an aloe Vera outside that looks desperate for more
space.

I am thinking of using pots twice the current size(?)
Basically, I want to minimise the frequency of this trauma (for
both the plant and for me) but without using overly large
containers. *I don't want to do it again next year, but I don't
want to take up too much indoor space.

Any tips on protecting my hands from the spines while I molest
the cacti?

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It is my experience with cacti and succulents over the last many years
that most of them prefer to be root bound in well draining soil. I
have combined many smaller cacti into larger dish like clay pots
though to cut back on the number of containers. Then I mulched the top
of the sandy soil with small pea rocks to drain the moisture away from
the cactus. If you see roots coming out of the pot, then bump them up
a size larger. Four to six, etc. I'd use clay or glazed clay with a
good drain hole. I have sturdy kitchen tongs to hold the cactus while
repot them. The square ones that have handles that resemble scissors
are the best and don't bite into the flesh of the cactus like the
other ones. If you don't have kitchen tongs, they're a good
investment at a Wal-Mart or bargain store where they have a nice
selection of kitchen tools for sale. Before I used kitchen tongs, I
used to fold newspaper into a thick but flexible strip and us it as a
holding strap, but the tongs are far easier to use. I'm about to have
to get serious about where to place my own collection of cactus and
succulents and tender African bulbs inside our house because we've had
unseasonably warm weather and I know the honeymoon will soon be over
and I will be hauling in old fashioned metal and heavy plastic milk
crates of pots with wicked spines at the last minute because the local
weather man/woman has said hard freeze and frost. I have quite an
assortment of things spiny and mean. I don't envy you repotting your
cactus. Why not wait until late winter before you do this? It's
heading towards winter and they're dormant and not doing much growing
right now. Just remember to barely water them and keep them cool.
40° will get them to set buds and maybe bloom for you next year as
well. by the way, what kind are the larger outside ones? and the
aloe vera doesn't need to be repotted. it will live quite happy with
bound roots. I have one in an old fashioned tea kettle and if it
rained too much, I'd just lay it on it's side and let the water drain
out the spout.

I hope this helps a bit. I have some that need repotting as well, but
I am going to wait until late Winter to do it. That way when I am
house bound and needing to get my hands into dirt, I will be able to
pot my cactus.

Eva Shovelful gardening near the Mississippi River somewhere in zone
7b