Use a fungicide on them, and keep them in the shade. Plenty of air circulation to keep away the fungus, and Cinnamon may work as well. Keep them damp they are used to getting fog this time of year, the seeds are like dust.
They grow on a north side of a rock or a hill side facing north, so put the pot on a north wall. Norma

Thanks Norma. I'll see if I can find a good fungicide.

I just ordered seeds of Dudleya Pulverulenta and came across this post. Ltecato, did you ever get the seedlings to survive? What type of fungicide did you use/would you recommend?

CC: My second batch of seedlings is still alive and getting larger. In hopes of controlling fungus, I lightly puffed some sulfur dust over the seedlings after they sprouted. I'm not sure this was a smart move because some of them were buried in sulfur due to the fact that I couldn't get the powder to disperse evenly. I think it might have killed a few of them. I'm thinking it would probably have been smarter to mix the sulfur into the planting mix before I added the seeds, so maybe I'll do it that way the next time. Good luck with your seedlings.

P.S. Another thing I'm doing differently this time is that I'm leaving the plastic cover over the container to retain moisture. A little bit leaks out through a crack so I have to mist it once in a while.

Thanks ltecato,

Where could I find sulfur powder? Is is common at big box stores? I would really like to try and keep these seedlings alive, since i lost 19 out of 20 Aloe Dichotoma seedlings to (what i believe was) fungus. One day they were perfectly fine, the next they were droopy and paper thin. Still hoping to keep the last one alive until spring, when i could pot it up outside.

Sulfur powder should be easy to find. It's used to dust roses for fungus control. Mine came in a canister about the size of a Pringle's can, and it has a narrow spout in the center of the top. You squeeze the can to puff out the dust. As Norma pointed out, cinnamon is supposed to control fungus as well.

Do not follow the instructions you have been provided. For best results, do not cover the plants with plastic, use a thin coating of coarse perlite and provide plenty of air circulation, partial shade and keep the soil moist, not wet. Do not use a fungicde containing sulfur. It disturbs the soil pH and can damage the leaves. To avoid damping off, keep the air circulation up. If you do need a fungicide, use Ortho Garden Disease Control or Daconil, same product, and dilute to 1 oz per gallon Water from the bottom of the trays/pots. Plants naturally grow in a sandy loam type soil with a basic pH. Covering with plastic sheets as this causes too much humidity and definitely leads to fungus growth. Too much sun can also cause sunburn. D. pulverulenta are fall/winter growers so expect them to slow down as it get warmer and the photoperiod (sunlight amount per day). I suspect your first batch rotted. Too much moisture. Hope this helps. We are Boo Hollow Botanicals and grow 60-75 thousand dudleya seedlings a year. D. brittonii, D. edulis, D. cymosa, D. caespitosa, D. pulverulenta, D. calcicola, D. farinosa and several other rared species. Good luck.

Thanks for the heads-up, Boo. And you're probably right, because my second batch of seedlings recently died. I think I gave it too much water. Disappointing because it lasted much longer than the first. Keep up the good work. I love those dudleyas.

It's not difficult to grow Dudleya plants from seed. I find that crowding them at first helps and dividing them when they are quite small into small bundles. Keep them moist but don't fuss with other variables and they'll do quite well. Give them gentle sun. Eventually, one of the small bundles will take over and you're on your way. I grow them all the time and have no difficulty. They germinate in the first week.

Boohollow,

Seems you have tons of knowledge about Dudleyas! My favourite plant, Could you tell me where I can buy seeds. Looked up you Boo Hollow Botanicals but couldn't find it.

Pamela

Just a friendly reminder that it is ILLEGAL to collect seeds from the wild- especially from California native plants that may be locally rare.

Hi, I see that these posts are a couple of years old but hope that someone will read them. My 2 batches of seedlings were doing well for a couple of month and starting to produce the second set of leaves. Then they all died all of a sudden. within 2 weeks. It coincided with the temperature dropping in Santa Barbara, CA, in the middle of December. Should I have kept them warm? I had them on a light mixture of sand, and sunshine seedling mix.

I'm in a different country with a different climate so can only relate my own experience of growing Dudleya pulverulenta from seed.

I grow freshly harvested seed in a similar substrate to yours on either my kitchen or bathroom window sills, both of which face south. They germinate within a few days and have never, so far, given me any cause for concern. They don't experience dramatic temperature flucuations, which leads me to suspect that that may be the source of your problem.

I sterilize small batches of home mixed potting soil by filling reused, clean jars with reused potting and sandy soil and microwaving it for 4 minutes, then put on the lid and seal it closed. Cooling causes a vacuum seal. That seems to help prevent the dampening off of the seedlings.