How to mix early, mid, and late-blooming cultivars to create flowery borders
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People often ask me how I keep the show going so continuously at Cape Cottage Garden. Let's continue our blog series, the "Four C's of Continuous Color." Today, we'll talk about another "C" in my approach - cultivar selection.
The range of bloom times within a particular genus is astonishing. By planting a range of early, mid, and late cultivars that bloom in succession, I've been able to create an ongoing progression of flowers that bloom all season long. I first grasped the value of this approach when I sought to extend my tulip season. By being intentional about what I planted, I discovered I could extend my tulip season from a short 10-day period to nearly five weeks. See below for an example of the different cultivars that help my tulip season last. A "double early" cultivar such as 'Foxtrot' might open for me in mid-April whereas a "double late" cultivar such as 'Yellow Pomponette' often carries me through the second week of May.
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Besides tulips, many other perennials, from peonies to alliums to astilbes come in early, mid, and late varieties.
To discover your options, it's helpful to do a little research online when making your plant selections. For example, when I was planning my allium garden, I consulted this handy bloom time chart from Longfield Gardens.
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Source: Longfield Gardens
Using this chart, I was able to plan my allium season so that it lasts for months. The season here starts in mid-May with 'Purple Sensation' and 'Mt. Everest' and extends nearly to July with Allium sphaerocephalon, commonly known as drumstick alliums.
Salvias and nepeta are other examples of flowers that I get to enjoy for longer in my garden because I chose a range of cultivars as shown below.
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