The key plant (sometimes called the thriller) here is not the tallest one, but rather the bright orange carbuncled echeveria (Echeveria gibbiflora hybrid, zones 9 to 11) which repeats the container color so perfectly. Blue chalk fingers (Senecio mandraliscae) provide height in this asymmetrical design, while an assortment of succulents in russet tones fill in the ground plane.
Bring back some driftwood and make this.
String of Pearls The plant commonly called String of Pearls truthfully looks more like a string of peas. It has small spherical leaves about ¼ inch in diameter, "strung" on thin stems like beads, resulting in a truly unique specimen. String of Pearls prefers two to three hours of direct sunlight per day as a houseplant, though it can grow indoors under strong artificial light for 14 to 16 hours daily in the growing season, and 12 hours a day in the winter. Want to enjoy your String of Pearls outdoors during warm months? No problem. It can take the heat, but keep it shaded from any intense midday sun.
String of Bananas The second trailing succulent species of interest is called String of Bananas (Senecio radicans); it is native to the Cape Province area of South Africa. As a succulent, its tissues conserve moisture, rendering it well adapted to dry, hot conditions, though it also grows well in tropical conditions, too. Like most succulents, this species is frost tender and cannot withstand freezing temperatures (below 32 degrees Fahrenheit), though of course it can be a great houseplant in colder regions.
Succulents. If your crevice is sited in a warm, dry, sunny location, succulents such as these Echeverias may be a beautiful and logical choice. Succulents are unmatched for their variety of colors, shapes and textures. The fact that a sunny wall absorbs and radiates heat makes it a microclimate well suited for many of them. Be sure to pay attention to the cold hardiness on nursery plant tags, as some of the more commonly sold succulents are not suitable for colder climates. Shown: Echeveria and Agave attenuata
We have no gate, but perhaps this type of pot could be put on a pedestal, and treated like a visual gate of sorts. bahacca The long spillers in the front are fish hooks. Looks like a bit of brown bean in the back. The other spiller is similar in look to Crassula pellucida ssp. marginalis 'Variegata' Filler that looks a bit like an open artichoke-not sure of the name but they are sold EVERYWHERE here in Orange County, CA, even grocery stores. Hope that helps.
Dymondia margaretae is great with succulents, a personal love...now, where are the rocks, or slabs that will show off all of these delicious plants?
Q