bush column columnar England english evergreen garden Great Britain hedge home house kent Penshurst Place plant shrub Taxus baccata topiary tree yew aerial-roots banyan banyan-tree columnar-tree competing competitive constricting distinctive epiphytes external ficus fig growing growth power powerful root-system Roots strangle strangler strangler-fig strangling strength strong sub-tropical trees tropical accretions bio-chemical-accretionary-structures cementation cumulative-structures excretions formations formed forming fossils high-saline-levels lake layered living-fossils living-rocks microbialites microorganisms natural park rock-structure sedimentary-grains shallow-water shaped shapes slow-growth stromatolite stromatoliths structures Australian-variety blue-sky columnar-shape conifer coniferous cupressus-sempervirens cypress dense driveway-planting elegant evergreen-conifer foliage golden-foliage narrow-space-growth nature ornamental-tree pencil-pine popular potable screening sky stately Swanes-golden-pencil-pine thin upright vigorous angles appearance blue branch branches branching Cacti cactus clusters edges flora frilled frills fruit fruiting garden-display green green-fruit height high irregular large leaf light long multiple-branched perennial points prickles Prickly protection ribbed ribbing shade shadows sharp spikes spines succulent sunlight sunshine surface surfaces tall textures Unripe unusual clouds horizon ocean skies water