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10 Best Summer-Blooming Bulbs

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Summer-Blooming Bulbs

We often think of planting bulbs for spring coloring, but there are plenty of summer flower bulbs that can add color to the garden. Most summer bulbs are semi-tropical perennials.

It is more common to see these flowers in warm climates, where most of the bulbs can be left in the ground throughout the year. But even gardeners who live in cold climates can enjoy bulbs that bloom in summer.

Although they are often not hardy enough to stay in the ground year-round, they can be grown as annuals or removed from the ground and stored for the winter. Here are 10 summer flower bulbs worth adding to your garden.

Tip
Most summer flower bulbs should be planted in warm, well-drained soil. If you want to give your bulbs a head start, you can plant them indoors for about a month or two before the weather outside adapts to your growing conditions.

Then take them outside to continue growing in the pot or by transplanting them to your garden.

Lily of the Nile (Agapanthus Orientalis)

From approximately June to August, the lily of the Nile produces rounded clusters of blue or white flowers on stems that can reach 4 to 5 feet in height. Each cluster can have between 40 and 100 isolated flowers.

The plant grows in a variety of soil types, although it prefers soils rich in organic matter. Then add a layer of compost to the planting site every year. Place bulbs 1 to 2 feet apart and keep plants evenly moist during hot weather.

  • USDA Growing Zones: 7 to 10
  • Color Varieties: Blue, white
  • Sun Exposure: Full sun to part shade
  • Soil Needs: Rich, medium moisture, well-draining

Tuberous Begonia (Begonia Tuberhybrida)

The intense colors of the tuberous begonias will brighten up a garden. The foliage of these plants looks almost succulent and makes them attractive even when not in bloom. Tuberous begonias have a long flowering period from July to September.

Plant the tubers with the concave side about 30 cm apart. Always keep the soil moist, but make sure your plants have good drainage and good air circulation to prevent disease.

  • USDA Growing Zones: 9 to 11
  • Color Varieties: Red, orange, yellow, pink, white
  • Sun Exposure: Part shade
  • Soil Needs: Rich, medium moisture, well-draining

Caladium (Caladium Horulanum)

Caladiums are grown for their large, colorful leaves. Powdered or mixed with greens, whites, reds, and pinks, caladiums add a touch of the tropics to a shady garden. These plants grow well in partial or full shade, as direct sunlight can burn the leaves.

They grow to a height and spread around 1 to 2.5 feet, which makes them reasonable to grow in containers. If you live outside the growing area, you can keep the plants in their containers indoors for the winter.

  • USDA Growing Zones: 9 to 10
  • Color Varieties: Greenish-white
  • Sun Exposure: Part shade to full shade
  • Soil Needs: Humusy, acidic, moist, well-draining

Canna (Canna)

Cannas come in different exotic and colorful varieties. Tall and ornate, there is no mistaking its tropical appeal. These plants grow to about 2-8 feet tall with a slightly shorter spread, depending on the variety.

So be sure to give them plenty of room in your garden by planting the rhizomes about 10 to 15 inches deep, as soon as the threat of frost passes in the spring. In the fall, you can lift the rhizome tufts out of the ground for winter storage, if you live outside of their growing areas.

  • USDA Growing Zones: 7 to 10
  • Color Varieties: Red, orange, yellow, pink, cream
  • Sun Exposure: Full sun
  • Soil Needs: Rich, moist, well-draining

Lily of the Valley (Convallaria Majalis)

You almost have to look for the lily of the valley to really see the flowers, but its intense scent will guide you to the plant. Yeast infection generally spreads and forms a carpet in colder climates, especially slightly acidic soils.

Some gardeners think it is invasive. Protect your plant from the hot sun and keep the soil evenly moist. If it spreads further than desired, cut the rhizomes immediately to remove any new shoots.

  • USDA Growing Zones: 3 to 8
  • Color Varieties: White
  • Sun Exposure: Part shade to full shade
  • Soil Needs: Rich, moist, well-draining

Dahlia (Dahlia)

Dahlias form a large family of different flowers. The smaller varieties are generally grown as annuals, though you can dig up and store dahlia tubers for the winter as well if you're outside of your growing areas.

Plants range from 1 to 6 feet tall and 1 to 3 feet wide; they bloom from July to September. Be sure to give your variety adequate space and plan to place taller varieties to keep them upright. Also, provide regular watering during the growing season so the soil never dries out.

  • USDA Growing Zones: 7 to 10
  • Color Varieties: Red, orange, yellow, pink, purple, white
  • Sun Exposure: Full sun
  • Soil Needs: Rich, medium moisture, well-draining

Gladiolus (Gladiolus)

The gladiolus group produces popular cut flowers with their colorful trumpet-shaped blooms on long stems. These plants are quite adaptable when it comes to soil, but don't plant them in heavy clay.

Also, make sure your planting site is protected from strong winds. Gladiolus plants grow 1 to 6 feet tall with a 1 to 2-foot spread, depending on the variety. Provides uniform moisture throughout the growing season, but reduces watering as soon as flowering stops.

  • USDA Growing Zones: 7 to 10
  • Color Varieties: Red, orange, yellow, green, purple, white
  • Sun Exposure: Full sun
  • Soil Needs: Humusy, medium moisture, well-draining

Iris (Iris)

There is an iris to please every gardener. The tall, bearded iris is a traditional favorite. There is also the delicate Siberian iris, the delicate crested iris, and the water-loving flag, Iris.

Most irises are tough and require little maintenance. Plant your rhizomes shallowly, making sure they have enough room to spread your variety. Water the plants regularly throughout the growing season to keep the soil from drying out, but make sure they have good drainage.

  • USDA Growing Zones: 3 to 10
  • Color Varieties: Blue, purple, yellow, pink, orange, red, white
  • Sun Exposure: Full sun to part shade
  • Soil Needs: Average, medium moisture, well-draining

Lily (Lilium)

Lilium is a large and diverse group of trumpet-shaped flowers. They come in many colors (some with spots and stripes) and grow to around 30-2.5 meters. Most require little care once established in the right climate.

They generally do best if their tops are completely sunny, but the roots have some shade. You can keep the soil cool by adding a layer of mulch to the planting site. Plant the bulbs about 10-15 cm deep and water regularly to keep the soil evenly moist.

  • USDA Growing Zones: 3 to 8
  • Color Varieties: White, red, orange, yellow, purple
  • Sun Exposure: Full sun to part shade
  • Soil Needs: Average, medium moisture, well-draining

Calla Lily (Zantedeschia)

Calla lily is another tropical-looking summer flower. Its cup-shaped flowers are typically white, although they are also available in yellow, pink, and red. Calla lilies are generally grown as annuals in cooler climates.

But you can keep the rhizomes indoors for the winter, as long as you bring them in before the first frost. These plants grow well around lakes and in rain gardens, as they love a good amount of water. Don't let the soil dry out during the growing season.

  • USDA Growing Zones: 8 to 10
  • Color Varieties: White, yellow, pink, red
  • Sun Exposure: Full sun to part shade
  • Soil Needs: Rich, moist, well-draining

Enjoy This Video Tutorial About Summer Blooming Bulbs

Source: Northlawn Flower Farm

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