Hey there,

I too have most of jades/succulents in the gritty mix outdoors but I am down here in Central Florida where heat/sun and humidity can be unbearable (even for my plants).

First off, the crassula plants are mostly winter growers from my experience (at least here in FL). I had issues with my succulents burning in our summer due to the intense heat. I currently have mine in a covered patio under a LED 135W grow light. My day time temps even under shade are constantly 90-92 degrees. You can consider most my collection dormant this time of year. The problem with succulents being dormant is they dont require as much water/fertilizer. I also use foliage pro and i water 1/4 tsp per gallon every watering with an occasional flush every 4-6 weeks (no fert). Even though, I'm under LED grow lights right now, I'm watering most of them every 5-7 days. If you are out in full sun and NOT getting burn damage, I would water every 2-3 days. Under that full sun, i would not wait until leaves begin to wrinkle as you could cause damage to the plants.

I'm guessing you will see more vigorous growth in your spring/fall season as temps cool slightly into the high 70s to lower/mid 80s. At this time, i would increase your fertilization and go from there.

Depending on the type of crassulas you have, the yellowing can be due to the full sun. However, I've seen overwatering result in yellowing and dropping of leaves as well.

Can you post some pics for us?

Remember to keep the plants in as full of sun as they can tolerate without burn damage as the days get shorter/cooler for you. Now would be the only time to protect them from full sun if needed (depending on climate).

I've aslo seen Jades turn yellow from a lack of watering and root rot....Yes, if you leaves the plants to dry out to often and too much, the roots will die and then rot in any moist mix..

I use a hose on shower and thoroughly soak them every other day or so, when they look dry..

MIke

Thanks so much Calzoner and Mike. It rained pretty hard yesterday evening and the mix and clay pots are still wet this morning. I suspect I have not been watering enough/thoroughly. The water runs out so quickly and I'm used to watering/flushing peat-based soils.

They're in the most sun I can give them - the downside of living in an older neighbourhood and backing out onto a ravine... lots of big trees :) They provide a lot of shade though. So they sit next to a rock garden facing south. I keep whacking back morning glories so they don't take over my pots.

I will try to post pics of my other crassulas once I can get pics of them.

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This one shows how pale the leaves are. The front jade seems pretty happy. Darker leaves.
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The ones you posted are the hardest o keep full of leaves if you leave them on the drier side..

Don't be afraid when they look dry and don't treat them like jades..You can't be lazy watering these or you will continually loose leaves..

Mike

Are the ones in pic P. afras ?