6 Summer Flowering Shrubs

These six flowering shrubs are beautiful all during the hottest months of the year and long into autumn providing showy blasts of color and wonderful cuttings for indoor bouquets.

1. Butterfly Bush - Buddleia davidii 

Just as it sounds, butterfly bush attracts not only butterflies, but bees and humans as well. With deliciously fragrant flowers, this lilac look-a-like will bloom all through summer and into autumn. Butterfly bushes are available in blue, purple, lavender, pink and white.

Zones: 5-9

Height: 10+ feet

Growing Conditions: Full Sun and well-draining soil


2. Hydrangeas -  Hydrangea paniculata and Hydrangea macrophylla

Though not exceptionally fragrant, hydrangeas can provide showy, dramatic color. Hydrangeas can be pruned or trained into large bushes or miniature trees offering beautiful clusters of delicate, star-shaped blooms. Colors range from deep royal blues and purples, to blushing pinks and tinted whites, even greens which are ideal cutting flowers for bouquets. The shrubs live many years and are hardy plants once established. Hydrangea paniculata is the easiest hydrangea to grow and has lacier flowers making it a great starter for any gardener. Whereas, Hydrangea macrophylla likes more moist shady temperatures and is a bit smaller, but reblooms multiple times throughout the summer into autumn.

Zones: paniculata 4-8; macrophylla 5-9

Height: paniculata 10 feet tall and 10 feet wide; macrophylla Up to 5 feet tall

Growing Conditions: paniculata Full sun and well-draining soil; macrophylla Part shade and moist soils

3. Rose of Sharon - Hibiscus syriacus

All through the hottest months of summer Rose of Sharon provides tropical-looking flowers of pink, lavender-blue, and white that are ideal for cutting into bouquets. When shopping for this shrub, make sure sterile varieties are purchased due to prolific and weedy seedlings.

Zones: 5-9

Height: 10 feet tall and 10 feet Wide

Growing Conditions: Full sun and well-draining soil


4. Carolina Allspice -  Calycanthus floridus

The scent of Caroline Allspice has a spicy fragrance which will fill the yard on the warm days of summer. The deep red blooms stand out with their spiky shape and bold appearance. Caroline Allspice is a native to parts of North American and is a tough, hardy plant which can withstand most temperature extremes.

Zone: 5-9

Height: Up to 8 feet

Growing Conditions: Full sun to partial shade and well-draining soils


5. Oleander - Nerium oleander

This beautiful shrub is an easy grower which can withstand drought and loves sub-tropical areas. The flowers range in color from pink to red, lilac to purple, yellow to white and are great cuttings for bouquets. Though a fool-proof plant for beginning gardeners, Oleander is extremely poisonous so be careful of pets and children.

Zones: 10-11

Height: Up to 10 feet, varies by species

Growing Conditions: Full sun and well-draining soil, can withstand drought


6. Shrub Rose

Unlike many varities of rose, shrub rose isn't finicky and can grow most anywhere. The blooms are beautiful and prolific all over this disease-resistant, easy going plant. All through summer, shrub rose will produce flowers in pink, red, white, and yellow. Species of shrub rose vary dramatically, though all shrub roses do have thorns.

Zones: 3-9

Height: Up to 6 feet, varies by species

Growing Conditions: varies by species