The background consists of artificial rockwork, supported on huge wooden scaffoldings.
It is made sufficiently strong to bear the weight of the animals, which are confined within their bounds by undercut overhanging ridges, and by deep and wide ditches, masked by rockwork.
Portulaca splendens: half-hardy, 6 in., crimson, rose, yellow, white, &c., single and double; splendid prostrate plants for sunny rockwork.
- Neat trailing plants adapted for rockwork, thriving in sandy soil.
Pretty dwarf tufted plants, with needle-shaped leaves, adapted for rockwork.