Gardens are living things-changing over time. One year everything in the garden seems to bloom in April and May. Other years different plants reach maturity and provide color and structure during the summer. If your garden needs a few plants that will "pop" in the landscpe why not add a white bloomer that you can still enjoy after the sun goes down?
A great looking native plant for the back of the border is philadelphus lewisii or wild mock orange. Fragrant, white, satiny 2" flowers attract butterflies in late spring and early summer. Goose Creek is a doulbe-flowered selection that forms a fountain shape 4-10 ft tall and is fairly drought tolerant. Not fussy about soil type but it must have good drainage.
Another sweet-scented, white flowering Ca. native is carpenteria californica or bush anemone. Although this plant needs little water once established it can also accept ordinary garden conditions making it valuable closer to the house in the "lean, mean and green" zone that the fire dept wants irrigated more to retard flames. Clusters of fragrant 2-3" white blossoms with yellow centers appear at the ends of the branches. This shrub grows slowly to 4-6 ft tall and would be beautiful along a path or next to the patio where you could enjoy it’s fragrance in the evening, too.
Roses are among the showiest fragrant flowers you can grow in your garden. Sure they need a little extra water but the pay back is spectacular. Place them in areas with other plants that need regular water. Here are my favorite white roses.
Full Sail- a medium upright hybrid tea rose with large bright white flowers and a strong honeysuckle fragrance.
John F. Kennedy- Huge, full greenish white buds open to rich white and smell like licorice. This rose stands up well to hot weather.
Iceberg- One of the top ten roses of the workls and the best landscpe white around. It also comes as a climber. Honey scented rose clusters are borne in great profusion. This rose is extremely disease resistant and needs little care. Looks great as a hedge or in mass plantings. This the the part I love, they have very few thorns.
Stainless Steel- A rose that is so close to white it would shine in a moon garden. With pale silvery lavender flowers and a fragrance stronger than Sterling Silver it’s easier to care for and grow. Flower size and color are best with cooler temperatures or in a bit of shade.
What else can you grow in a white garden? If I had more room, I’d have a Longissims Alba wisteria with pure white fragrant flowers that cascade in spikes up to 4 ft long. Or I’d grow a Krasavitsa Moskvy lilac whose lavender-rose tinted buds open to full, double, creamy, fragrant white flowers.
I also like the also called mock orange because it’s flowers really do smell like citrus blossoms. Their green and white foliage can lighten up a dark corner in any garden and scent the air. Tuck some sweet alyssum along a path and your white garden is complete.