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A lover of heat, evolvulus thrives in the middle of a hot summer and continues to impress all the way through fall. With its showy blue blooms held against silvery-green foliage, this plant flourishes when planted in a garden bed as a low-growing groundcover plant or in a container. A close relative of morning glory, the flowers tend to have a few of the same quirks, including closing up at the end of the day only to re-open the following morning.
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One of the most remarkable characteristics about evolvulus is that it comes in one of the most elusive colors in the horticultural world—a bright, true blue. Blooming from late spring all the way until frost, evolvulus has the benefit of being self-cleaning, so there is no need to worry about removing old spent blooms.
Evolvulus Care Must-Knows
This tough, tender perennial performs best in well-drained soil, whether in the ground or in a container. Its drought-tolerant nature makes it a great option for neglected areas of the garden or even for containers that might receive infrequent water. One of the quickest ways to kill evolvulus is to get it too wet.
To get the most color out of your evolvulus, be sure to plant it in full sun to encourage continuous flowering throughout the season. Sun also helps maintain a compact shape and pretty silver-colored foliage. If planted in too much shade, evolvulus will often take on a sprawling appearance, bloom less frequently, and lose some of the silvery sheen that makes its foliage look so nice. When first starting evolvulus, prune the plant back a bit to encourage branching. Giving the young growing tips a pinch every now and then can also help to encourage a nice, bushy plant. As the seasons draw on, evolvulus may begin to look a bit tired and leggy, and blooming may slow down. At this point, cut back the plant to help encourage a fresh new flush of growth. This will also help plants to rebloom and make them look a bit tidier.