Search found 2779 matches

by TimN
Fri Jan 19, 2018 5:57 pm
Forum: General
Topic: Sandstone for cacti
Replies: 2
Views: 73

Re: Sandstone for cacti

The only issue I see is that sandstone will dissolve in acid. Well, the carbonate bonds that hold the quartz sand grains together will dissolve, the sand itself is pretty durable. If you're acidifying your water it will turn the sandstone back to sand, if you're not, it might work. I've never seen s...
by TimN
Tue Jan 09, 2018 9:03 pm
Forum: General
Topic: Mineral mix and fertilizer
Replies: 12
Views: 246

Re: Mineral mix and fertilizer

Keep in mind that the Dyna Gro 7-7-7 is effectively 2.1-7-7. There is only 2.1% Ammoniacal Nitrogen. Read Elton Roberts' and Malcolm Burleigh pieces (links above) to understand how these two Nitrogen forms are handled by cactus/succulents. I've been mixing my own fertilizer since I read those papers...
by TimN
Tue Jan 09, 2018 8:44 pm
Forum: General
Topic: Lophophora sp. in the US
Replies: 7
Views: 160

Re: Lophophora sp. in the US

I've grown L. williamsii in the US for 10 years or so without problems (AZ). I don't advertise that fact, generally. I'm not sure how many police officers would recognize the plant, tbh. I bought my plants mail order from Portugal, as I recall. I've sold them on ebay, given them away, etc without pr...
by TimN
Wed Dec 20, 2017 9:39 pm
Forum: General
Topic: Grafted parodias
Replies: 4
Views: 182

Re: Grafted parodias

hahahaha, the public buys cactus that have been spray painted colors like blue and red, and have fake flowers hot glued to them. A weird little stick holding up their brightly colored "cactus" isn't going to cause them a minutes concern. The lollipops found in the big box stores in AZ are generally ...
by TimN
Wed Dec 20, 2017 9:31 pm
Forum: General
Topic: An another questio for you-
Replies: 15
Views: 407

Re: An another questio for you-

I don't have the real answer, but I know that Opuntias are considered more "primitive" plants, less developed. To me, the shape doesn't make much sense, with the thin, wide shape instead of globular they don't get the advantage of less surface area per unit of mass. I"m not an Opuntiod expert, but I...
by TimN
Tue Dec 12, 2017 8:15 pm
Forum: Cultivation
Topic: Pumice vs perlite
Replies: 25
Views: 598

Re: Pumice vs perlite

One other thing: Perlite - volcanic glass heated to puff it up. It's essentially porous balls of glass. -manmade Vermiculite - mica heated to puff it up. Mica is decomposes into clay. Like mica, vermiculite is not very durable and will break down over time into clay. -manmade Pumice - Can be similar...
by TimN
Tue Dec 12, 2017 8:06 pm
Forum: Cultivation
Topic: Pumice vs perlite
Replies: 25
Views: 598

Re: Pumice vs perlite

I use a product called TurfaceMVP which is a calcined clay product. It's similar to the clay oil-absorbent found in auto parts stores or clay cat litter. I get Turface at my local irrigation supply store (their website will help you locate a local dealer). I pay about $17 (US) for 50 lbs. Turface is...
by TimN
Wed Dec 06, 2017 10:08 pm
Forum: Cultivation
Topic: Salt deposits
Replies: 6
Views: 254

Re: Salt deposits

Let me as a question: is the water you use on your plants untreated? Is your tap water hard? (Water in Phoenix is around 400ppm) Is your tap water alkaline? I think this looks more like calcium which has to do with the content of your water and it's alkalinity than your media. If your water is alkal...
by TimN
Thu Nov 16, 2017 9:46 pm
Forum: General
Topic: What is up with this?
Replies: 6
Views: 286

Re: What is up with this?

Very nice plant! Many Mammillaria will flower in spring and fall. It's all about the photo period for some species. A fair number of Mamms are also self-fertile. The bud with the "innie" on the right looks like a pollinated flower.
by TimN
Tue Nov 14, 2017 10:24 pm
Forum: General
Topic: Siamese triplets
Replies: 3
Views: 223

Re: Siamese triplets

I have generally good luck re-potting cactus. I let them dry for a week or so (in the pots) so the media is mostly dry. Then I separate them from the media/dirt/soil. I trim the roots back (for instance, I would leave about an inch of roots on the plants pictured. The idea being that you can separat...
by TimN
Mon Nov 13, 2017 5:31 pm
Forum: General
Topic: saguaro growth
Replies: 24
Views: 874

Re: saguaro growth

Not trying to be a dick, but I don't think that assertion is supported by the available evidence. Is there some information you have on "misshapen branches" on Saguaros? I was not able to find anything. Saguaros generally crest which is a much more organized mutation than whatever this is. OP, can y...
by TimN
Wed Nov 08, 2017 5:45 pm
Forum: General
Topic: saguaro growth
Replies: 24
Views: 874

Re: saguaro growth

I believe this is actually a Gall. I've posted pictures in the past of a very similar plant that was growing in North Phoenix. The cactus appears to be gone now. Not sure if it died or was "transplanted". I observed it for a few years until I stopped taking that route. Eventually, the gall stopped g...
by TimN
Thu Oct 19, 2017 7:39 pm
Forum: Cacti Places
Topic: AZ cactus sales
Replies: 4
Views: 1218

Re: AZ cactus sales

...I've always wondered if they have small cacti too... Yes, they have lots of young plants in 2 or 3 inch pots. They also buy collections and sell them off so you can occasionally find very nice specimens of plants that you normally only see sold small. I got a couple of nice A. myriostigma a few ...
by TimN
Thu Sep 14, 2017 10:25 pm
Forum: General
Topic: Humidity for desert cacti
Replies: 5
Views: 468

Re: Humidity for desert cacti

I think excess humidity might have the effect of making mold or rusts more likely. And, as already observed, reduced transpiration. That can allow molds and/or bacteria to grow in the soil. Humidity in PHX today at 3 PM is 26% (probably the low point of the day). There are some clouds in the sky, hu...
by TimN
Fri Jul 01, 2016 9:27 pm
Forum: General
Topic: Rare double flowers!
Replies: 4
Views: 881

Re: Rare double flowers!

Nice plant! Ariocarpus will often produce multiple flowers at the same time. Keep them watered and in the sun!

I don't have this plant anymore, but it was a very nice one. I couldn't find the picture of a plant I had that put out 13 flowers at once.

Cheers!