Search found 4533 matches

by greenknight
Wed Aug 03, 2022 10:39 am
Forum: Cultivation
Topic: An Echinopsis question
Replies: 4
Views: 157

Re: An Echinopsis question

Bud set happens during dormancy, appears in the spring as an enlarged areole. If you don't see any of those, no chance of flowers this year (though they don't always develop the first year after the bud is set).
by greenknight
Wed Aug 03, 2022 4:43 am
Forum: Cultivation
Topic: An Echinopsis question
Replies: 4
Views: 157

Re: An Echinopsis question

They like a little more water than most desert cacti, maybe you're not giving them enough.

Echinopsis hybrids are generally easy to grow.
by greenknight
Tue Aug 02, 2022 7:34 am
Forum: Cultivation
Topic: Some of my young San Pedro's Need help standing fall over.
Replies: 4
Views: 141

Re: Some of my young San Pedro's Need help standing fall over.

The only way too much water would make them droop is if they rotted, which doesn't appear to be what's happening here. You've got two different cases: where the stem is bending over, and where the stem is still straight but it's leaning. The second case tells me you didn't firm the substrate down ad...
by greenknight
Mon Aug 01, 2022 6:18 am
Forum: Cultivation
Topic: Watering question
Replies: 5
Views: 150

Re: Watering question

Agreed, that soil is staying wet much too long.

In the winter, they should be dry so they go dormant. You don't want them growing when the light levels are lower, and it sounds like the light is none to good at the best of times.
by greenknight
Sun Jul 31, 2022 3:43 am
Forum: Sick Cacti - Pests, Diseases, etc.
Topic: Cleistocactus strausii keep dying
Replies: 7
Views: 272

Re: Cleistocactus strausii keep dying

Maybe you should forget about growing them in pots and plant them in the ground outside, at least the roots would stay cooler.
by greenknight
Fri Jul 29, 2022 11:13 pm
Forum: Sick Cacti - Pests, Diseases, etc.
Topic: Cleistocactus strausii keep dying
Replies: 7
Views: 272

Re: Cleistocactus strausii keep dying

The coolest place in the greenhouse is on the ground, maybe if you set them down there when it gets real hot it would help.

I'd suggest added shading during heat waves, but I see from your greenhouse thread you already thought of that.
by greenknight
Fri Jul 29, 2022 2:30 am
Forum: Succulent Growing Help
Topic: Difficulties with Lobivia famatimensis
Replies: 3
Views: 240

Re: Difficulties with Lobivia famatimensis

I've found that cacti with weak root systems often will revive if they're under-potted (note that Lifle also suggests under-potting for this species). Problem is, it has a tap root so it needs a deep pot. My solution in such cases is to put rocks in the pot to take up the extra space, leaving a hole...
by greenknight
Fri Jul 29, 2022 1:59 am
Forum: Sick Cacti - Pests, Diseases, etc.
Topic: Cleistocactus strausii keep dying
Replies: 7
Views: 272

Re: Cleistocactus strausii keep dying

They're native to high mountain regions of Bolivia and Argentina, not adapted to high temperatures - that could be the problem. Might try moving them into the shade in hot weather. Put them in white pots to keep the roots cooler, too, and/or shade the pot.
by greenknight
Wed Jul 27, 2022 11:10 pm
Forum: Cacti Identification
Topic: What Blue Cactus am I?
Replies: 13
Views: 506

Re: What Blue Cactus am I?

Echinocactus platyacanthus? Probably wrong, but I took a shot.
by greenknight
Wed Jul 27, 2022 11:27 am
Forum: General
Topic: Planting seedlings how to prevent fungi
Replies: 6
Views: 358

Re: Planting seedlings how to prevent fungi

When you bake it in the oven it takes a while, so the odor gets pretty strong (maybe cleaning the oven after would get rid of it, though). Microwaving is quicker, only a little odor which quickly dissipates. Another method I've seen suggested is to solarize it, put it in a plastic bag in the hot sun...
by greenknight
Wed Jul 27, 2022 5:47 am
Forum: General
Topic: Planting seedlings how to prevent fungi
Replies: 6
Views: 358

Re: Planting seedlings how to prevent fungi

Pasteurize the planting medium - a lot of people call it sterilizing, but you don't want to get it that hot, just get the moist medium to 140 - 180f for a few minutes. You can bake it in the oven, but your oven may give off an odor of dirt every time you use it for quite a while. I use the microwave...
by greenknight
Wed Jul 27, 2022 2:19 am
Forum: Cacti Identification
Topic: Opuntia ID
Replies: 8
Views: 462

Re: Opuntia ID

It could be a Burbank Spineless O. ficus-indica, or it could be something else. As Mike says, it's hard to tell, need more than this picture.
by greenknight
Mon Jul 25, 2022 2:06 am
Forum: General
Topic: Hardgrown or not- how do you prefer your cacti/succulents?
Replies: 26
Views: 898

Re: Hardgrown or not- how do you prefer your cacti/succulents?

You should water any potted plant until water flows freely from the drain holes - you don't want any dry pockets, and you want to flush out excess salts.This doesn't change when growing cacti "hard" - if anything it's even more important, since you let them get very dry between waterings. ...
by greenknight
Fri Jul 22, 2022 1:34 pm
Forum: Cacti Identification
Topic: ID help please
Replies: 11
Views: 428

Re: ID help please

Every inch of distance from the window makes a difference, get it as close as you can.

My opinion is based more on the shape of the cactus and weak spine development than the spine color, actually, since the spine color is variable.
by greenknight
Thu Jul 21, 2022 10:31 pm
Forum: Cacti Identification
Topic: ID help please
Replies: 11
Views: 428

Re: ID help please

Your cactus does have yellow spines, just extremely pale - low light will do that. P. magnifica develops a waxy bloom on its surface if it gets enough sun, which makes it appear blue - it's green in lower light. It should retain the globose shape (a common name is "balloon cactus") unti it...