Plant Dahlias and Canna Lilies Now for Dazzling Summer Color
Love the tropical foliage and brilliant color of dahlia and Canna lily blooms? Plant them now through April if you live in Zones 8 through 11. Long prized as cut flowers for bouquets, dahlias and Canna lilies do not fail to dazzle also when grouped in flowerbeds alone or with other summer blooming plants.
Indigenous to Central Mexico, dahlias are herbaceous, leafy plants that offer blooms in a wide assortment of colors (except blue and black). Bloom size ranges from a couple of inches across to roughly a foot wide (the largest size is known as “dinner-plate”). Tall varieties need staking and all types can benefit from dead-heading when blooms are spent.
Dahlia roots are actually tubers and do best when planted in moist, well-drained, loamy soil. If growing them in areas where there is frost, dig and store the tubers in a cool, dry (and frost-free) place in the fall for re-planting the next year. In extreme climates like the high desert, dahlias benefit from several inches of mulch covering the bed.
The main pests of dahlias are slugs, snails, earwigs, leaf hoppers, and aphids. Powdery mildew and gray mold can also infect the plant.
Canna lilies, like dahlias, are herbaceous summer-blooming plants that come in a wide variety of colors. Indigenous to sub-tropical areas of North and South America, Cannas can be grown as perennials in zones 7 through 11, according to the U.S. Department of Agriculture. In other zones with more extreme climates, mulch the plants two to four inches deep or lift the rhizomes (roots) and store them in dry peat moss in a cool, dry place until ready to replant.
Plant rhizomes of tall Canna lilies at the back of the flowerbed (or at the front of the bed if the plants are dwarf) in three to six inches of rich, well-drained soil. Position so that the eyes are facing up. Pests include slugs, snails, Canna leaf-rollers, and Japanese beetles. Aphids can spread canna viruses that can cause leaf streaking and bloom disfigurement. The plants are heavy feeders so will need a good organic fertilizer when they begin to look ratty and two to four inches of water each week.
Use tall dahlias and Canna lilies at the back of your flowerbed and add mid-size blooming plants in the middle and dwarf or low growing bedding plants with lots of color at the front to create a spectacular garden area this summer. If you live in a relatively frost-free zone, your dahlias and Canna lilies will spring back to life and carry on with colorful displays amid tropical foliage for years to come.
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Seasonal Blooms for Floral Arrangements
Autumn in Northern California is one of my favorite times of the year. By November, many of the summer blooms in our flower beds have faded. Seeds have been collected for next year’s blooms. Now’s the time to put in bulbs and tubers for spring, but that doesn’t mean we have no blooms for a Thanksgiving floral arrangement.
The clocks have been turned back and the rainy season has arrived, but don’t tell that to the roses.
Red-gold roses, pyracantha berries, rustic seed pods, orange- and rust-colored zinnias, asters, willowleaf cotoneaster, and dahlias are some of the garden plants that combine beautifully in a fall floral arrangement. To the harvest table, I also like to add some seasonal fruits like pomegranates and persimmons.
Thanks to the recent rain, the bougainvillea blazes in shades of fuchsia, orange, red, and purple. Zinnia’s near the farmette’s bee house are still holding color and hanging on until cold weather arrives.
And while pyracantha (fire thorn) berries add splashes of bright orange to a dark corner of the garden where bamboo towers to ten feet, the Chinese lantern plant holds aloft dozens of small pink blooms like little lanterns.
With Thanksgiving three weeks away, I’m feeling confident that our table arrangement will include some of the season’s festive berries, seed pods, and blooming flowers collected from around the farmette.
In the meantime, I’ll notice the splashes of color to be discovered here and there and consider how to use them in a holiday bouquet.
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