Search found 94 matches

by Carbo
Fri Jul 22, 2022 6:54 pm
Forum: Grafting
Topic: Graft chimeras and Pereskiopsis without glochids
Replies: 12
Views: 1723

Re: Graft chimeras and Pereskiopsis without glochids

I use pereskiopsis a lot in grafting and think it’s one of the best stocks for seedlings but absolutely can not stand the glochids. Over the years I’ve experimented with different ways to remove them and think I might have finally come up with a permanent solution. About a year ago I made a series ...
by Carbo
Tue May 10, 2022 5:46 pm
Forum: Grown From Seed
Topic: Echinopsis seeds not germinating
Replies: 2
Views: 308

Echinopsis seeds not germinating

I sowed a bunch of e. mirabillis seeds last year and this spring too, but every time almost no seeds germinate, in this years case ZERO. I have the same problem with e. oxygona. My friend sowed e. mirabillis in the exact same way as me and every single seeds germinated. I don't get it...do echinopsi...
by Carbo
Mon Apr 18, 2022 9:16 pm
Forum: Seed Depot
Topic: Looking for leafy cacti
Replies: 2
Views: 591

Re: Looking for leafy cacti

Koehres have Pereskia grandifolia , 10 seeds for €1.80 https://www.kaktus-koehres.de/shop/Cactus-seeds/Peireskia---1_413.html You might want to search for Leuenbergeria and Rhodocactus as well. Pereskia grandifolia is now called Rhodocactus grandifolius . See POWO for which species were split off (...
by Carbo
Sat Apr 16, 2022 6:33 pm
Forum: Seed Depot
Topic: Looking for leafy cacti
Replies: 2
Views: 591

Looking for leafy cacti

Looking for seeds of some leafy cacti: Pereskia bleo Pereskia bahiensis Pereskia diaz-romeroana Pereskia grandifolia Pereskia guamacho Pereskia horrida Pereskia lychnidiflora Pereskia marcanoi Pereskia nemorosa Pereskia portulacifolia Pereskia quisqueyana Pereskia sacharosa Pereskia stenantha Peresk...
by Carbo
Sun Jul 04, 2021 8:41 pm
Forum: Pollination
Topic: Overcoming self-incompatibility
Replies: 11
Views: 3718

Overcoming self-incompatibility

I've been searching the internet for hours on methods that can be used on cacti to promote self fertilization in self-incompatible species but I found nothing. Does anyone have any resources or knows of any methods that might work? I've tried cutting the stigma at a sharp angle and then dusting the ...
by Carbo
Sat Jun 26, 2021 11:15 am
Forum: Pollination
Topic: Cactus hybrids
Replies: 15
Views: 7980

Re: Cactus hybrids

In this case Echinopsis pollen might just been used for stimulation of Echinocereus to self-pollinate. If you grow seedling from those seeds will be clear are these hybrids or pure Echinocereus poselgeri offspring. Interesting, I'm actually looking into ways to self-pollinate self-incompatible spec...
by Carbo
Wed Jun 23, 2021 7:00 pm
Forum: Pollination
Topic: Cactus hybrids
Replies: 15
Views: 7980

Re: Cactus hybrids

I crossed echinocereus poselgeri with the common peanut cactus (echinopsis chamaecereus) and there are fruits with seeds. Echinocereus was used as a mother plant and it's making fruits.
by Carbo
Sun Jun 13, 2021 12:29 pm
Forum: General
Topic: Rapid plant movement in Cacti
Replies: 3
Views: 873

Re: Rapid plant movement in Cacti

I would say your theory is probably correct. It is an example of thigmonasty, various plant responses to touch. Many cactus flowers have this, including Notocactus , opuntioids ( Opuntia and Puna , definitely), Pediocactus and Pterocactus . Here are some videos: https://www.youtube.com/watch?v=cag9...
by Carbo
Sun Jun 13, 2021 11:34 am
Forum: General
Topic: Rapid plant movement in Cacti
Replies: 3
Views: 873

Rapid plant movement in Cacti

When this opuntia's (most likely stricta) flower is disturbed, it rapidly pulls all disturbed anthers towards the pistil and in the process self-pollinates. I just noticed this today and I'm amazed, what could possibly be the reason for it to do this? Normally cacti avoid self-pollination/fertilizat...
by Carbo
Mon May 31, 2021 6:51 pm
Forum: Grafting
Topic: What now?
Replies: 8
Views: 1937

Re: What now?

Thanks anttisepp and Carbo! It's in a 3.5"/9 cm pot. That's interesting about pot size. I'd never thought about that before. Have you found the size of the root system affects the character of the scion (especially in terms of amount of offsetting) or just the speed of growth? It's a huge effe...
by Carbo
Sat May 29, 2021 4:31 pm
Forum: Grafting
Topic: Why do you graft?
Replies: 20
Views: 2962

Re: Why do you graft?

Mrs.Green wrote: Fri May 28, 2021 6:35 am If you are right about the higher sugarlevels one could also be tempted to belive that this would attract more pests?
It's the opposite :)
I believe that because it's a tasty snack for any critter that goes by, it has some serious defenses against them.
by Carbo
Wed May 26, 2021 5:35 pm
Forum: Grafting
Topic: Why do you graft?
Replies: 20
Views: 2962

Re: Why do you graft?

I graft Young seedlings, 1~2 months old after germination. There was a professional cactus seeds supplier but he finished his business and I can not buy cactus seeds in here now. Some people import cactus seeds but I do not because importing of plant related materials is very hard in here. My purpo...
by Carbo
Tue May 25, 2021 8:17 am
Forum: Grafting
Topic: Why do you graft?
Replies: 20
Views: 2962

Re: Why do you graft?

Carbo; thank you for an informative answer :) Interesting that the Mamm you are referring to reacts so differently to the two species of rootstock and how much impact that have on the flowers. The Mamm mentioned is a monstrose form , would the same apply to normal forms of cacti? In the pic in the ...
by Carbo
Mon May 24, 2021 8:42 pm
Forum: Cultivation
Topic: Sand vs. grit
Replies: 1
Views: 816

Re: Sand vs. grit

Grit is gritty and sand is...sandy :D I don't think there's really any concrete meanings behind those terms. But you can pretty much use anything that's chemically stable as inorganic addition to your substrate. I've found over the years that smaller grain size is not good, not enough oxygen (air) g...
by Carbo
Mon May 24, 2021 8:31 pm
Forum: Grafting
Topic: What now?
Replies: 8
Views: 1937

Re: What now?

What's that pot size? You might be surprised at the results if you transplant it in a bigger one. I've recently discovered that pot size plays a major role in how much your scion is going to grow when grafted on stocks with aggressive roots such as pereskiopsis.