
When we first had our rock retaining wall installed around our pool, I never thought I'd become this enamored with the nooks and crannies. Oh I knew I wanted to have a few Sempervivum (Hens and Chicks) set in the wall but it really was a very little thought.
Getting things to grow in those nooks and crannies was harder than I thought it would be. Thankfully, once I got them going, mother nature took things in her own hands and has done a wonderful job adding to the design.
One hurdle is that some of the spots I want to grow lots of succulents in, are really fairly shaded. The top photo shows some Sedum dasyphyllum growing merrily in a spot that only gets a few hours of direct sun. This is the smallest Sedum in my garden, smaller than the eraser on a pencil.

The thought behind putting Thyme in the cracks was that when people would walk on the thyme, it would release it's delicious scent. Instead, people tend to step awkwardly here to avoid stepping on the Thyme.

This might be more Sedum dasyphyllum, it's about to bloom. I'm not sure I put it in the wall, it might have packed up and moved there on it's own. I also see there's a little entrance way to a chipmunk palace on the right side, grrrrr. Maybe they planted it here?

By far the smallest Sempervivums in my garden are these very webbed ones here. I've taken offsets and put them in pots but they look awful in that type of setting. I think they're perfect right here where they can fill in this crack.

Right above them is a Sedum that doesn't mind the good amount of shade thrown by the daylily foliage around it. Sometimes you think you have a spot with enough sun and don't realize that the surrounding plant material blocks much of the sunlight.

A white Dianthus cascades across a boulder set in the wall. I was afraid it wouldn't bloom this year as it looked very unhappy last month. I think the problem is I never cut it back and the stems were so long and lanky. This year I will remember to give it a good haircut when it's done blooming.

Considering how many succulents I've stuck into the wall, there's still lots of gaps. The hard part is the soil washes out from rains or from the sprinkler system. Worse yet, you think you have it all packed in and a chipmunk decides to use that spot as the back door.

This clump of Sempervivum has been photographed more than any other. It's getting to the point though that it's way overcrowded and I know if I don't thin it out a bit it won't be able to sustain itself in this manner.

Only one red Sempervivum has taken hold in the wall. I'm sure I didn't stick that Sedum right in there next to it but I'll let it grow and see how it looks next year. Maybe it will take me by surprise :-)

As always, shoes make the best container to add some more interest to the wall.
This kind of gardening gives me a complete different feeling that other types of gardening. There's no hauling of compost, digging massive holes, dragging hoses or heavy duty work of that sort. Instead, my usual tool at hand is a simple dandelion fork.
Do you do any kind of rock gardening?