Much of the charm of the Conservatory’s Abby Aldrich Rockefeller Garden display comes from a glorious assortment of upright annuals. These make tall, statuesque, and often bold additions to any seasonal border. But while we often associate height in both perennial and annual borders with spires that guide your eyes upward—and there are certainly plenty of spires in this Groundbreakers display—what delighted me was the variety of other forms that gave height to the border.
One striking example was the monster-sized umbels of false Queen Anne’s lace, Ammi visnaga ‘Green Mist’. This opulent annual sports large Queen Anne’s lace flowers above ferny foliage. It grows to four feet tall and will create an impressive show whether placed in the middle or back of an annual border. It attracts beneficial insects into your garden and also makes a spectacular cut flower.
If you would like to introduce some razzle-dazzle into your container displays this summer, I would suggest hunting down an unusual South African member of the mint family called Hemizygia ‘Candy Kisses’ (zone 9-11).
In the wild, Hemizygia (syn. Syncolostemon) needs to contend with drought and fire. It does this by producing a woody swollen root crown called a lignotuber. This tuberous crown holds starches to get the plant through times of deprivation and fire while keeping dormant buds intact and ready to grow.
You would never know that this lovely sagebush (Hemizygia) was so embattled by looking at it. It grows to 2 feet tall in this area; has fleshy, variegated foliage with a creamy edge; gaudy dark purple stems; and tall, upright, pinkish-purple blooms.
In flower, ‘Candy Kisses’ is not shy. For the earlier part of the summer you will be enjoying the variegated foliage and it will look akin to a variegated mint. The flowers will appear in late summer. If you grow it in a container, take it inside once the weather cools and it will continue to grow through the winter.
This winter I attended a lecture by Bill Calkins, Retail Business Manager for the Ball Horticultural Company, a well-known seed company founded in Chicago at the turn of the 20th century. Its reputation for innovative new introductions and high quality product lines—including Simply Beautiful Gardens and Burpee Home Gardens—is renowned in the industry.
I enjoyed Calkins’ lecture not only because it covered an impressive array of new annuals and improved varieties flooding the market, but cast the subject of annuals in a refreshing light. The highlight was his discussion of the Dr. Seuss garden, a child-friendly garden containing fun and bizarre-looking annuals to inspire the imagination. Any initiative to encourage children to explore and engage in the natural world is a good one, so this endeavor sounds really fun. And, after all, who doesn’t like Dr. Seuss’ wild and wacky creations?
Sometimes the ordinary can look extraordinary just by making a few changes. This is the case with dusty miller (Centaurea cineraria) in the Home Gardening Center. In one of the beds we have ‘Gloucester White’ growing alongside Salvia ‘Wendy’s Wish’ and Petunia Supertunia® ‘Vista Silverberry’. This is how you would expect to see it in a display–partnered in a nice color combination with other annuals.
In an adjacent bed, however, we have done something different. The same dusty miller, ‘Gloucester White’, has been grown into a standard. The two specimens that you see are between four and five years old. Dusty miller is a vigorous grower and forms a woody stem fairly quickly, making it an ideal candidate for a standard.
As you walk through the Home Gardening Center and peer into the Trial Beds, you will see some unusual sights this year. The Trial Beds are well represented with plants from a number of exotic places such as New Zealand, Sri Lanka, Indonesia, Africa, and Thailand.
When you enter the Garden, the first bed is a riotous collection of oranges, chartreuse, and gold. One of the centerpieces of this display is a plant that is indigenous to Sri Lanka, Indonesia, and Cambodia. Flag bush, or Buddha’s lamp (Mussaenda frondosa), is a tender shrub. In this region it will grow to look more like a large perennial than a shrub, reaching about three or more feet in one season. It has large white poinsettia-like bracts and small, bright orange flowers. You can place the flag bush in full sun or partial shade. It likes rich, well-drained soil, so remember to amend your soil with organic matter such as compost before you plant.
Every year during the winter months, growers start parading their new introductions through gardening magazines and catalogs. It’s the annual horticultural fashion show. And the horticultural models that hit the catwalk usually tell us a great deal about current trends and market demand.
As I peruse the pages of magazines this year I am struck by the balance of practicality and aesthetic. We all love beautiful plants–there is no denying it. This year, however, beauty is amalgamated with functionality.
Ed. Note: Much as when the Garden photographer tells you something is special, when one of the Garden’s serious plant guys shoots you an email, you sit up and listen. This happened recently when I got an email from Jon Peter, Plants Records Manager about a little purple flower.
The Botanical Garden’s living collections is among the greatest in the world and contains more than 1 million plants. Jon Peter, Plant Records Manager, periodically shines the spotlight on a particular species that can be found within our 250 acres.
This pretty flower is of Centratherum punctatum. The name Centratherum comes from the Greek kentron meaning spur and anthos meaning flower; referring to the flower having a spur-like base. The specific epithet punctatum means spotted. It goes by many common names including larkdaisy, Brazilian button flower, pineapple thistle, porcupine flower, Brazilian bachelor’s button and Manaos beauty.
