It looks like sweet alyssum, but is not even close. The tiny white flowers and finely textured foliage work almost as well for similar uses in the landscape. In fact, the plants are most often grown as short term warm season annuals. However, candytuft, Iberis sempervirens, is really a perennial that can be cut back in autumn, regenerate through winter, and bloom for spring and early summer.
One must really examine candytuft closely to see that it is related to cole crop vegetables like broccoli, cauliflower, cabbage and Brussels sprouts. That is why is has an odd aroma when cut back. Mature plants have the potential to get nearly a foot deep, but typically stay lower. They can spread a bit wider than a foot. Candytuft can tolerate a slight bit of shade, but prefers sunny exposure.
If planted closely together, candytuft can form a nice small scale ground cover. It mixes nicely with stones, and cascades slightly over the edges of low stone retaining walls. It is more substantial than sweet alyssum, and works better for permanent planting in borders and along walkways. The barely perceptible floral fragrance of individual plants can be quite appealing in larger volumes.
Of all the fruitless fruit trees, the purple leaf plum is the most popular here, but probably not for the obvious allure of its rich purplish or bronze foliage that maintains color until it falls in autumn. Purple leaf plum is simply so easy to grow. It does not need to be pruned as regularly as flowering peaches or flowering crabapples do. It is not as sensitive to sunscald as flowering cherries are.
This is an extreme bloomer! Cineraria, Pericallis X hybrida, blooms with composite flowers, which means that each small daisy flower is really a whole bunch of minute flowers clustered together to look like a single flower. As if this were not impressive enough, a whole bunch of these composite flowers are clustered together on top of each big wide floral truss. They are not easy to ignore.
It is known more as a small to mid-sized shade tree that produces edible nuts, but almond, Prunus dulcis, also blooms magnificently as soon as the weather allows. Actually, it often blooms a bit earlier than it should. Nut production can be ruined if rain dislodges blossoms or developing nuts. The profuse white flowers are small but slightly larger than those of other related stone fruit trees.
There is some controversy about the identity of the flowers that Micky Mouse picks at the porch to present to Minnie Mouse when she answers the door. Some insist that they are Transvaal daisy, Gerbera hybrida. When they are not in black and white, the substantial daisy flowers are cartoon hues of yellow, orange, red, pink and white, sometimes with chocolatey brown or black centers.
It is no coincidence that many plants with gray foliage are from mountains or deserts. Gray foliage is ‘glaucous’, which, like glaucoma, diffuses light. This helps to protect it from desiccation and scald when sunny weather is also hot, windy or arid. The glaucous foliage of Rocky Mountain juniper, Juniperus scopulorum, is what distinguishes it most from related North American junipers.
Oregon has good taste. Douglas fir, one of the most useful of timber trees in America, was selected as the state tree. Oregon grape, Mahonia aquifolium, was designated as the state flower. Although the tight clusters of tiny bright yellow flowers that bloom about now may not be as flashy as other state flowers, they contrast handsomely against the glossy and deep dark green foliage.
When the weather warms up a bit between frosty weather and winter storms, the rich fragrance of winter blooming daphne, Daphne odora, is at its best. The domed trusses of tiny pale pink flowers are not much wider than a quarter, so are easy to overlook while investigating the source of the fragrance. ‘Aureomarginata’, the standard cultivar, has glossy evergreen leaves with narrow pale yellow margins. Mature plants are only one or two feet high. All parts of the plant are incidentally toxic.
Where winters are more wintry, garden enthusiasts get to brag about their snowdrops as they emerge and bloom through melting snow. Diminutive white flowers against a backdrop of white snow may not look like much to us. We have more colorful flowers through winter, without the snow. Their kind of snowdrops, Galanthus specie, need more winter chill than they would get here anyway.
Fans of the Brady Bunch might recognized agonis, Agonis flexuosa, from the front yard of the Brady Residence. That particular tree was rather dark olive green, and might have grown two or three feet annually to reach the upstairs eaves. Most of the popular modern cultivars are darker bronze or burgundy, and probably stay a bit shorter, but attain the same elegant and slender form.