This is not the dreaded aggressively invasive Saint John’s wort that has naturalized in other regions. Nonetheless, creeping Saint John’s wort, Hypericum calycinum, does precisely as the name implies. It creeps, and has naturalized to a less aggressive degree in many spots near the coast. Its vigor is an advantage to many landscapes, but might eventually displease adjacent neighbors.
Creeping Saint John’s wort is a somewhat rustic perennial ground cover that does not need much water once established. It naturalizes in coastal climates because it gets all the water it needs from annual rainfall there. Although evergreen, it looks best if mown as winter ends. It happens to be susceptible to rust, and mowing removes much of the old foliage the the fungus overwinters in.
One to two inch wide bright yellow flowers, with five petals and prominent stamens, start to bloom in June and continue into September. By that time, the paired leaves might be getting tired if not watered, or infested with rust, but should stay presentable until mowing at the end of winter. Crowded plants might get three feet high. Otherwise, growth does not get much more than a foot deep.
The Nile River floods annually, inundating everything in its floodplain. Lily of the Nile, Agapanthus africanus, survives by hanging on firmly with a thick network of rubbery roots. It grows and blooms in warm weather as floodwater recedes, and then survives through a long, warm and dry season until the river floods again. It tolerates both drought and flooding, although it prefers more stability.
Whether it is grown intentionally, or considered to be a common roadside weed, there is no denying that perennial pea, Lathyrus latifolius, knows how to brighten some of the wilder parts of the garden with brilliant purplish pink bloom. Some garden varieties bloom either pale pink or white, just like a few random feral plants do. Bloom resembles that of sweet pea, but without fragrance.
It is fair to say that garden verbena, Verbena X hybrida, is a reliable warm season annual. It gets planted in spring to spread out and bloom through summer with bright pink, red, purple or almost blue, or softer pastel pink or pale white. It is commonly replaced with cool season annuals by late autumn. However, garden verbena is actually a short term perennial that can survive winter to bloom for a few years.
If California poppy had not been designated as the California state flower, Matilija poppy, Romneya coulteri, might have been. It was nominated, but was less popular at the time, partly because it was familiar only to those near its native range in Southern California. Some of us know it as ‘fried egg flower’, because the big and floppy white flowers with yellow centers look like fried eggs.
It is impossible to say who the parents were. So many specie were hybridized to develop the many cultivars of flowering maple that the Latin name of the collective group is simply Abutilon X hybridum, which means exactly what it looks like. They are hybrids of various and rarely documented species of Abutilon. The ‘X’ dispels any doubt. ‘Chinese lantern’ is another common name.
This is one of the more traditional perennials for old fashioned window boxes, not only because it cascades downward to avoid obstructing associated windows, but also because, back before window screens were commonly available, the aromatic foliage was purported to repel mosquitoes. Ivy geranium, Pelargonium peltatum, is splendid for hanging pots and retaining walls as well.
In California, it is hard to imagine that hinoki cypress, Chamaecyparis obtusa, gets big enough to be harvested for lumber in Japan. Almost all of the local garden varieties stay quite short. The largest rarely get up to second story eaves. The most compact types that are grown for bonsai, do not get much more than a few inches tall. Most are somewhere in between, to about ten feet tall.
There is some debate about the origin of the common name of Confederate jasmine. Some attribute it to its popularity in the former Confederate States of America. Others believe it originated in the Malay Confederacy, much closer to its native range. That is irrelevant here, where we know this popular vine with very fragrant flowers simply as star jasmine, Trachelospermum jasminoides.
Tony Tomeo 