Spring is such a great time of year in the landscape that it's easy to suffer a letdown after it's over. That's why it's important to stock your yard with early summer flowering shrubs. Their follow-up act will take some of the sting out of losing the blooms on those splendid flowering shrubs of late spring.
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Three kinds of flowering shrubs are widely grown and among your best allies for early summer color: spireas, roses, and hydrangeas. Examples of each are given on this list, beginning with spirea (Spiraea).
Neon Flash spirea (3 feet tall by 3 feet wide) begins blooming in early June in zone 5, and it will carry some of that early-summer color into late June and early July. It's also a reblooming bush. So we could just as easily have slotted it into a late summer flowering shrubs list because it will bloom again for you in August and/or September.
Not all spireas are necessarily most valued for the beauty of their blooms. Many gardeners grow Goldflame for its foliage. The gold in the leaves of Gold Mound is even brighter than Goldflame's.
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Many gardeners shy away from planting roses (Rosa), feeling that these early summer flowering shrubs are too difficult to grow and care for. That's too bad because not all kinds of roses require a green thumb. A particularly easy type to grow is Candy Oh rose (3 to 4 feet tall, with a similar spread).
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Americans will sometimes observe the 4th of July holiday season by growing red, white, and blue flowers in their flower borders. It's easiest to get such a color combination using bedding plants, but, occasionally, people go the extra mile and try to work perennials and/or shrubs into the color scheme. Invincibelle Spirit hydrangea (3 to 4 feet tall, with a similar spread) comes close to filling the need for something red when it first blooms (the flowers later fade to pink). To continue the theme, we'll also look at examples of white-flowered and blue-flowered Hydrangea bushes.
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The white hydrangea in this red-white-blue trio has the most impressive flower head, by far, unless you're dead set against the color, white. What Incrediball (4 to 5 feet tall, with a similar width) lacks in colorfulness it makes up for in size. But be forewarned: As with some other large flowers, such as those on peony plants (Paeonia lactiflora), they can fill up with rainwater and flop over under all that extra weight.Continue to 5 of 11 below.
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Grown in acidic soils, Hydrangea macrophylla Nikko Blue (4 to 6 feet tall and wide) will produce blue hydrangea flowers. This cultivar can be classified in either of two ways, depending on which plant part you're focusing on: In terms of foliage, it's a bigleaf hydrangea but in terms of flowers, it's a mophead hydrangea.
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Lavender (Lavandula) is the smallest plant on the list, standing just 2 to 3 feet tall (spread varies according to cultivar). In fact, many of you probably think of it as an herb rather than as a shrub. But, technically, a shrub it is. Provide it with sharp-draining soil and you'll have a reliable early summer bloomer for years, with little maintenance. In addition to its blooms, it is valued as one of the plants with silvery leaves.
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Miss Kim (4 to 9 feet tall x 5 to 7 feet across) is a type of lilac shrub that blooms a bit later than the better-known lilacs (Syringa vulgaris). That is not the only way in which the two differ. While many gardeners still prefer Syringa vulgaris for its smell, there is a place in your landscaping for Miss Kim. This is especially true if you're seeking early-summer color from a shrub.
Bloomerang (3 to 4 feet tall and wide) is another good choice in lilacs when you are looking for a shrub with a later blooming period. When your Syringa vulgaris is done flowering, you will still have some flowers on your Miss Kim and Bloomerang bushes. Bloomerang will even rebloom (thus its name), giving you even later color. Both of these compact lilacs provide a bridge from May to June in zone 5, offering flowers after your May stars have retired.
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Lovers of butterflies naturally want to draw them to their yards by growing plants to attract butterflies. Thus the popularity of butterfly bush (Buddleia), which gained such a name with good reason. There's just one problem: The traditional Buddleia grown in gardens is among the worst invasive plants in some regions of North America. Enter Blue Chip (24 to 36 inches tall and wide), a non-invasive improvement on your grandparents' butterfly bush.Continue to 9 of 11 below.
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Potentilla fruticosa is a rose-family member that can be grown in zones 2 to 7, making it one of the hardiest shrubs available. This drought-tolerant bush becomes 1 to 4 feet tall and wide. Its compactness makes it a good edging plant: Grow several in a row to line a driveway, walkway, etc. Sunset is a cultivar that offers the classic yellow flowers this bush is best known for.
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We will end the list with two bushes that display multiple talents in the landscape, across various seasons. Oakleaf hydrangea (Hydrangea quercifolia) is an especially good choice in this regard, offering four-season landscaping interest. So don't get caught up on when its flowers bloom and what they look like: This 4-to-6-foot bush (in both height and width) has so much more to offer than that.
For the record, the flowers bloom in early summer and look like typical hydrangea flowers. But let's talk about what else it offers. It would be worth growing for its fall foliage, alone. The shrub also has peeling bark on its branches that is pleasing to look at. All in all, it is a must-have shrub in the Northern landscape
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It's appropriate that Virginia sweetspire (Itea virginica) and oakleaf hydrangea appear last on this list of early summer flowering shrubs. From the point of view of many, they're shrubs for fall color, first and foremost. They just happen also to bloom in early summer. This is particularly true of Virginia sweetspire (4 feet tall by 4 feet wide). It's spiky white flowers, if enough of them are present, are moderately attractive. But what sells most gardeners on this bush is the fall color of its leaves. The June blooms are just a nice bonus.
This information is designed to establish sequence of bloom. The exact calendar date on which a bush will bloom depends on a variety of factors, including weather, growing conditions, and where you live. The beginning of summer is treated loosely as the start of June (not June 21). But a shrub that flowers June 1 in zone 5 will have already bloomed in May in a warmer zone. Still, the information provided will help you with your plant selection, so that you will be able to stagger the times that you can enjoy shrubs in full bloom in your yard, regardless of where you live.