Like euryops daisy, sweet pea shrub and New Zealand tea tree, the blue hibiscus, Alyogyne huegelii, blooms whenever it wants to, even if it wants to bloom sporadically through winter. It should bloom more abundantly in phases though spring and summer, but even that is difficult to predict. The three inch wide flowers are lavender blue, but can be rich purple or white. Pink is very rare.
Young plants can grow quickly but sparsely. Lanky stems can be tip pruned after a spring bloom phase to promote branching and improve density. Growth slows with maturity. Plants can get five feet high and wide in their second year, but might never reach the eaves. They like full sun and shelter from wind, but should not mind a bit of shade. Established plants do not need much water.
No one seems to know what ever happened to old fashioned dichondra lawns. Everyone seemed to like them, especially those of us who dislike turf grasses. Somehow, they became passe and very rare. The formerly common dichondra that such lawns were made of is now merely a resilient weed in turf lawns. But wait! We have not heard the last of this resilient and appealing perennial.
It may not always bloom profusely, but sweet pea shrub, Polygala fruticosa, blooms sporadically through most of the year. Even when not much color is evident from a distance, a few flowers can likely be found on closer inspection. For some reason, bloom seems to be quite colorful now. Bloom phases should be more profuse in spring and summer. The pea flowers are soft purplish pink.
This is no timid vine! Flame vine, Pyrostegia venusta, is related to the lavender trumpet vine and blood red trumpet vine, and is just as vigorous. Although it can not be recommended for tight spaces or small refined gardens, it excels at obscuring concrete walls. It only needs wires or stakes to be convinced to climb. If it gets too big, it can be cut back after bloom to regenerate quickly.
What is it about Australian plants that makes them bloom in winter? Perhaps they think they are still in Australia where it is summer. Whatever the deal is, Geraldton waxflower, Chamaelaucium uncinatum, provides a scattering of small white, pale pink or lavender pink flowers from now until spring. It is no mistake that their bloom resembles that of New Zealand tea tree. They are related.
Relative to other pines and evergreens that are commonly grown as living Christmas trees, the uncommon and even rare Austrian pine, Pinus nigra, would be a better option. If it gets planted too close to the home, as Christmas trees often do, it does not get big enough to cause major problems. Although much bigger in the wild, local trees may take decades to reach second story eaves.
Pictures are probably prettier than the real thing. Australian fuchsia, Correa pulchella, really does bloom with pendulous soft pink flowers through winter when not much else is blooming. However, the flowers are quite small, and the color is rather hazy. The real appeal of Australian fuchsia is that it is so undemanding, and once established, only needs watering a few times through summer.
Even those of us who live nowhere near its natural range live closer to Douglas fir, Pseudotsuga menziesii, than we realize. Most of our homes are constructed from Douglas fir lumber. Although very uncommon in landscaped gardens, Douglas fir is the most popular Christmas tree here. Trees introduced for timber have naturalized in parts of Europe, Argentina, Chile and New Zealand.
With such an odd variety of flowers blooming out of season, it should be no surprise that New Zealand tea tree, Leptospermum scoparium, decided to join the party. It starts blooming in phases in spring, and continues into autumn, so is not too terribly out of season. Besides, some varieties are known for spontaneous bloom phases at any time of year. Bloom can be pink, white or red.
Those who can grow Mexican lime, Citrus aurantifolia, get to brag to their friends who can not, even if they are only a few miles away in slightly cooler spots. It really is marginal here. If it gets too cool in winter, it can defoliate. Frost can damage or kill the stems. Because it stays smaller than other citrus, Mexican lime happens to do well in large pots that can be moved to shelter for winter.