the garden variety: Cleveland Botanical Garden Blog

Archive for the ‘Summer Perennials’ Category

August 25th, 2008

Coneflowers and Goldfinches

Toward the end of the summer, I always look forward to seeing Goldfinches flock to my Purple Coneflowers. This is one plant that I definitely do not dead-head because it continues to attract such great wildlife even after it goes completely out of bloom. In fact, I don’t cut the seed heads until the following spring because they are attractive even in the winter. Being such a relatively low maintenance perennial, it’s no wonder that Coneflowers are so popular with people (and Goldfinches). There are quite a few varieties to choose from and more being created every year. I like ‘Magnus’, ‘Alba’, ‘Bright Star’ and ‘Sunrise’. I’ve had some trouble growing ‘Sunset’ which is unfortunate because I really like the color. Next spring I plan on getting ‘Green Envy’ or ‘Green Jewel’ just because I like green flowers. I am not a huge fan of the double Coneflowers, ‘Pink Double Delight’ or ‘Coconut Lime’. I wonder if those cultivars attract Goldfinches as well as the single flowering Coneflowers?

Posted by Cynthia Druckenbrod

August 5th, 2008

Deadheading

 

I am surprised that there wasn’t a 60s rock band called “The Deadheaders.” What better name from a generation that promoted Flower Power?
 
You didn’t have to see Jurassic Park to know that evolution has instilled procreation as a very high priority in the plant and animal kingdoms. So when your favorite perennial finishes blooming, it moves on to creating seeds. If you deny it that opportunity by removing the spent blossom, you disrupt its normal procreation cycle. Chances are, it will try again and start over with more flowers. On some plants, if you keep repeating this cycle, they will reward you with new flowers all season long. Others just might not have the energy. But you won’t know for sure unless you try.
 
I’ve kind of caught the deadhead bug and have been removing spent blossoms on most of the plants I can reach. I refuse to climb a ladder and spend the time needed to deadhead my ornamental trees. But each year my poppies reseeded, bloomed in June and then faded away. This year they are still blooming because I spend the time deadheading each week. Gardeners have been deadheading plants like roses and geraniums for years. But try it out on some of your more unusual perennials. After my Jackmanii Clematis finished blooming this year I was out there with my scissors. I already see a new wave of buds forming on a vine that I had previously accepted as pretty much a one-time bloomer. My Red Valerian is the same way with loads of dormant flower buds in reserve just in case the first flush of flowers gets removed. Mother Nature has a backup plan!
 
Remember that sometimes you might actually want the seed. I won’t remove the spent flowers from the Bottlebrush Buckeye because I think the Buckeye nut is an interesting feature. And some flowers are just too small to individually remove. So in the case of Threadleaf Coreopsis or Cranesbill Geraniums, I shear them back to accomplish the same thing.
 
I may not be a flower child from the 60s, but I just may start that rock group.
 
Posted by Bob Rensel
July 30th, 2008

We’ll always have… Casablanca

Lots of flowers have “lily” added to the name: lily-of-the-valley, waterlily, daylily, calla lily, to name a few. It’s understandable – the lily is an archetypal flower, equal to the rose in history and symbolism, with thousands of years of reverence attached to it. Those other “lilies” have plenty of charm, but none of them have the sheer presence of the true lily.

 

Mid-July through mid-August, is “lily season” around here, and the Garden has a dozen or more fine varieties of garden lilies blooming in rapid succession. There are Trumpet, Oriental and Asiatic hybrids, as well as some of the true species, like  the native Turk’s Cap lily (Lilium superbum) in the Woodland Garden. The giant “Orienpets,” hybrids between Orientals and Trumpets are especially imposing, towering 6 and 7 feet high above their neighbors.
 
Although I’m something of a fragrance fanatic, I have to admit that the fragrance of most lilies is a little too much – intense, cloying, overwhelming - enjoyable from a distance! For some reason the ‘Casa Blanca’ lily, a very popular, easy-to-grow Oriental hybrid just captivates me with its scent. It’s potent, sophisticated and intriguing without so much of the overly ripe, almost animal muskiness that some of the others have. It’s sweet, even creamy, but with a hint of bittersweet chocolate. Maybe it’s the chocolate that has me returning to bury my nose in the blossoms each morning.
 
The flowers are immense – 8” across, white as snow, and substantial. The plants, blooming now in the Herb Garden here, are about 4 feet tall. Hawkmoths must appreciate the scent as well, because they are drawn to the flowers, even in the daytime. This is a perennial plant, which will return each year, if planted in moist, rich, well-drained soil, in a sunny spot, and lightly mulched for sun and frost protection. Although lilies make great cut flowers, I just learned that cutting the stems to bring indoors deprives the plant of important nutrients. I guess they are best enjoyed in the garden, if you don’t want to jeopardize next year’s blooms!
 
Posted by Ann McCulloh
June 19th, 2008

Every thing old is new again

One of the pleasures of a perennial garden is definitely the anticipation of seeing favorite blooms and vignettes re-appear year after year. The scene is the same, but always with a difference. Some plants thrive, getting fuller and more beautiful every year. Others are meant to dwindle away, to eventually be replaced by something new and just as lovely. The rather short blooming period of many perennials adds to the charm of a garden that is always in flux, always on the cusp of another transition.

This is the Garden’s CK Patrick perennial border, composed of herbaceous perennials and medium-sized shrubs. All combine to create harmonies of color and texture with foliage as well as flowers. This is one of my favorite moments in this garden, when the 7-foot foxtail lilies frame a cottage-pretty view of ‘Carefree Delight’ roses, pale yellow foxgloves, ‘Bee’s Ruby’ thrift and a dozen other pink, yellow and lavender beauties.

June 17th, 2008

Stake Now or Forever Hold Your Peace

Personally, I’d rather not see my beautiful perennials falling over in mid- to late summer, would you? It is so much easier to consider staking certain taller perennials in the early summer than it is when they actually fall over and many times, unfortunately, snap at the base. We frequently stake our Phlox, Monarda, Sidalcea, and tall Rudbeckia varieties to name just a few plants.

You can use a number of items for stakes- bamboo which comes in a natural taupe color or painted green is probably the most common staking device. It’s strong, inexpensive and will last a quite a number of years. Of course, you’ll need to replace the string around the plants every year and removing old string from bamboo stakes is not my favorite job. This year, we’re trying a new type of stake pictured here that is spiral shaped, made of steel and covered in green plastic. It literally takes less than a few minutes to install. The stake really blends in well to the plant so that you barely notice it once the plant encompasses it. Consider staking now while your plants are still a reasonable size to manipulate- or you might be picking up their floppy stems come one windy, rainy day in August.

Cleveland Botanical Garden
11030 East Boulevard
Cleveland, Ohio 44106 USA
t: 216.721.1600
f: 216.721.2056
http://www.cbgarden.org/