Summer Flowering Bulbs

Plant Now for Colour All Season Long

Summer-flowering bulbs are one of the simplest ways to bring long-lasting colour and impact to the garden. Planted in spring, they reward patience with vibrant displays that carry borders, containers and cutting gardens through the warmer months. Whether you’re planning bold statements or subtle accents, summer bulbs offer variety, reliability and excellent value.

What Are Summer-Flowering Bulbs?

Summer-flowering bulbs include a wide range of plants that are planted in spring and bloom from early summer through to autumn. Popular choices include dahlias, lilies, gladioli, alliums and begonias, each offering different heights, colours and flowering periods. Many are ideal for cutting, while others are perfect for borders or containers.

These bulbs are especially useful for filling gaps left by spring flowers and extending interest well into late summer.

When and Where to Plant

Most summer-flowering bulbs are best planted once the risk of frost has passed and the soil has begun to warm. Choose a sunny, sheltered spot where possible, as most summer bulbs thrive in good light and free-draining soil.

They can be planted directly into borders, raised beds or containers, making them suitable for gardens of all sizes. Containers are particularly useful for more tender varieties, as they can be moved if needed.

Preparing the Soil

Good soil preparation makes a noticeable difference. Before planting, improve the soil with compost or well-rotted organic matter to help retain moisture and provide nutrients. Bulbs should be planted at the recommended depth, with the growing tip facing upwards, and watered well after planting.

Adding a general-purpose feed at planting time helps support early growth and strong flowering.

Caring for Summer Bulbs

Once planted, summer-flowering bulbs are generally easy to care for. Regular watering during dry spells and occasional feeding will keep plants healthy and encourage continuous flowering. Taller varieties may need staking to prevent damage from wind or heavy rain.

Deadheading spent flowers helps prolong blooming, while allowing foliage to die back naturally later in the season ensures energy is stored for the following year.

Planning Ahead for Impact

One of the advantages of summer bulbs is their flexibility. They can be used to create bold colour schemes, fill empty spaces, or add height and structure to planting designs. By mixing varieties with different flowering times, it’s possible to enjoy colour from early summer through to the first frosts.

With minimal effort and thoughtful placement, summer-flowering bulbs offer a rewarding way to bring vibrancy and interest to the garden throughout the season.

Planting Advice

Bulb Fibre

Bulb Fibre helps to promote strong, healthy growth with a rich source of balanced nutrients. It is suitable for use with all bulbs, including flowers and edible crops.

Coarse Grit

If you are potting bulbs in to containers, it is a good idea to add some course grit to the compost to ensure good drainage. If your bulbs get too wet they will rot.

Bulb Planters

Make planting easy with a bulb planter (also great for potatoes!).