June brings to the garden flowers in bright colors, shapes and sizes. As a staple to a summer garden, June-blooming flowers come in colors like bright yellow to deep crimson and pale purple. Mix the bold colors together to create a striking flowerbed or border. Grow them in clusters along a garden wall or nestled within a flowerpot. June flowers often require full sun and well-drained soils to thrive.
Solitary clematis (Clematis integrifolia) provides striking blue to lavender flowers from May until July. They are suitable in USDA Zones 4 to 11. Solitary clematis is a non-climbing, upright perennial with a trailing, dense habit. It sprawls up to 3 feet wide and grows 1 to 3 feet tall, ideal nestled within a flower bed. The solitary, bell-shaped blooms look as if they are bowing down to the garden for an exquisite display. The twisted petals contrast with the creamy white anthers. Once mature, the blossoms on solitary clematis change to a silver to green feathery seed head that is just as attractive as the flower. Solitary clematis, despite its name, enjoys being grown in large groups. It grows best in full sun to part shade and moist, nutrient-rich soil. Keep the roots on solitary clematis moist and cool to ensure a healthy and vigorous perennial.
Siberian iris (Iris sibirica) is a perennial flower that grows best in USDA Zones 3 to 9. Its showy flowers grow in a wide range of colors, including rich purple, bright pink and deep garnet. The 18-inch-long, bright green grass-like leaves help to create the clumping habit that Siberian iris is known for. Blooming in May to June, Siberian irises make attractive fresh cut flowers because of their tall erect stems and showy blooms. They have a height of 1 to 3 feet and flourish in a wide range of soil types, including clay and acidic soils. They love wet feet and make the perfect plant to grow along an outdoor fountain or flanking a water garden. Siberian iris grows best in full sun to part shade.
Coreopsis (Coreopsis grandiflora "Sunray") produces its double to semi-double blooms beginning in late spring and all throughout the summer. It grows in USDA Zones 4 to 9 and has a moderate growth rate. Coreopsis reaches 3 feet in height with a 1- to 3-foot spread. Growing in upright clumps, coreopsis flowers made ideal plants to grow in masses along a border. Their bright yellow blooms have toothed edges that bring texture to the garden. Coreopsis requires regular deadheading to ensure a long blooming season. It grows best in full sun to part shade and nutrient-rich, well-drained soil.