Amoreuxia (Mexican Yellowshow)

Leo A. Martin
Wed, 03 Oct 2012 00:00:38 PDT
> I have seed ... from a recent BX and wondered when to plant them. I
> live in Phoenix area and someone from Yuma said they do well there so
> thought I'd try them here.

Hello Nancy,

I replied about mine already sprouting. I read about them on the Internet
and followed what I found. I haven't seen them in habitat yet, though the
late Eric Anderson from our local cactus club told me about finding them
in habitat.

Plant ASAP or wait until it warms up.

I filed with a fine file until a spot of white showed through. This is
difficult to do without dropping the seeds, which will promptly roll away.
I held them firmly with a needle-nosed pliers. File them over a white bath
towel so they don't bounce and roll away when you drop them and so you can
see them when you drop them. I learned this the hard way, but I have
fantastic close vision. The dogs enjoyed me being on all fours. File A.
gonzalezii opposite the attachment scar of the spherical seed if you are
able to see it. File A. palmatifida on the convex part of the curved seed.

Soak the seeds for a day or at most two in water, changing daily. Plant as
soon as they swell up or after two days' soaking. Pull off the membrane
around the seeds if you find it.

Plant the seeds 1/2" below the surface in a very deep pot. I used a 5
gallon nursery pot for 5 A. palmatifida seeds and a similarly-sized
decorative glazed container for 5 A. gonzalezii seeds. Use our local soil,
not a cactus mix. They will be in the pot a long time so you don't want to
use a potting mix that rots every few years. They grow among rocks on
slopes so they have excellent drainage at home.

They make deep taproots the first year and just a few leaves. I bought a
seedling A. palmatifida once in a standard 3.25" pot and I couldn't keep
it watered enough during our summers. So use a deep pot.

Put the pot outside someplace hot but not in full sun all day. Water when
the top is dry, but don't keep the pot soaking wet once they are up. The
taproot is supposed to go quite deep, quite quickly. My seedlings get
about 5 hours of morning sun now. Adult plants grow among rocks in full

Keep them growing as long as you can the first year. In the fall if the
leaves yellow let them dry out but don't let them freeze. If mine stay
green in my sunroom I'm going to water them all winter. Where they are
from it gets a lot colder at night than here in Phoenix, but in the ground
is warmer than in a big pot.

Next spring I'm not sure exactly what to do. A lot of things like this
need to be dry until they begin growing on their own. Others need a wakeup
shower. I had planned on asking Shaun in Yuma (the seed donor) how he
handles his. He said they should flower the second season.

I got 3/5 A. palmatifida and 1/5 A. gonzalezii to sprout and they were up
within a few days of planting a month ago or so. I expected better
germination. I think I didn't file deeply enough so the water didn't soak
in properly. The remaining seeds should sprout over the next few years, as
is common with desert seeds with thick coats. I gave the rest of the seeds
to people at the DBG and Boyce Thompson Arboretum.

Leo Martin
Phoenix, Arizona USA

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