Thats a broad question however many small Aloe, Gasteria, Haworthia, Stapeliads even Echeveria, Sedum and Cacti tolerate a fair measure of shade. Many in habitat grow under bushes etc especially when young. You would have to experiment. Small plants by their very nature are often adapted to shadier locations. Most large plants are a no no. If it is a deciduous European Elm you could try cool season growth plants that grow when the elm's leaves have dropped in autumn. That is if your climate is not too cold. Of course many broms would love such a position.

Aeoniums would probably do ok. They don't appreciate the heat and only start to grow in the Autumn. Also Gasterias and Haworthias too need shade. I have clumps of a large Gasteria in the ground under deciduous trees surviving well. Joylene. Vic.

Thanks for the help. Now have to source the plants. Judie

Update on my new cacti and succulent bed. The area has grown,funny about that,will be about 60metres by40 metres,will have a low fence around it,probably concrete with a red dye in it, and an old gate,distinctive design about a 100yr old,several others on the property.Will cover the ground with scoria,and wondering if I should put weedmat underneath. Have had marvellous help from a couple of growers, Cacti market, and Rudolph Schultz. Have collected quite a few plants, which are dormant in Summer and grow in winter. Need to be fairly large as otherwise they will get covered with the leaves as they fall from the elms.
It was also suggested that where I plant I put a bit of coconut fibre in the scoria.
Its now at the frustrating part, where I want to start planting but have still quite a bit of preparation to do,
Its been quite difficult as I want the area to blend into the rst of the garden and not look just tacked on as a good idea. Keep walking and looking at different directions and trying to imagine.
Have taklen photos of area as it got cleared, and as I get further will take more photos,but not sure how to post them,that is a bit advanced for me. Judie

Update and help please. I have used terracotta pipes as a focal point and a sort of sculpture, the area is now covered in red scoria,paths have been formed, and when I have got more money will be covered with hwite pebbles. But with all the books I have I am haing trouble in working out how high things grow, Does anyone know Crassula bluebird, for example. Gate is painted, and have decided the fence with be a replica ,only lower of the one by the ront gate. Have scrounged lots of pallates, will break them up and use them for the fence. Have been taking photos all along,so when they are developed will try to put them on this forum. Judie

Fence is painted and it all looks fabulous. All the plants are growing,still don't have the white pebbles for the paths,can't get the ones I envisage. I need something that grows in the winter, large, bushy,to put near the front fence to make the fourth wall. Have planted a pottery chook with attitude. Its mainly dark blue and green with splodges of pink, and actually looks very good.The elms are already in bud, and it will only be a week or two before they are in full leaf and then the sun will have trouble in penetrating.At the moment in sun nearly all day,when there is sun!!! Judie