The Best Buddleia for Butterflies: A Guide to Choosing the Perfect Plant

Buddleia: A Butterfly Magnet

Butterflies are beautiful creatures that bring joy to any garden. If you're looking to attract butterflies to your outdoor space, planting Buddleia is the perfect choice. Commonly known as butterfly bushes, Buddleia plants are a favourite among butterflies and pollinators alike.

However, with so many different varieties of Buddleia available, it can be challenging to choose which one is best suited for your garden. In this guide, we'll take a closer look at some of the best Buddleia for butterflies, helping you make an informed decision.

Top 5 Best Buddleia for Attracting Butterflies

1. Buddleia davidii 'Black Knight'

This is a stunning variety of Buddleia with deep purple flowers that bloom from mid-summer to early autumn. It's a favourite of butterflies, including monarchs, fritillaries, and swallowtails, making it a must-have for any butterfly garden.

In addition to its attractive flowers, Buddleia davidii 'Black Knight' is easy to care for and grows well in most soils. It prefers full sun but can tolerate partial shade, making it suitable for a range of garden settings.

2. Buddleia davidii 'Royal Red'

If you're looking for a Buddleia with eye-catching flowers, 'Royal Red' is an excellent choice. Its deep red blossoms bloom in mid-summer and are highly attractive to butterflies, including red admirals and painted ladies.

Like most Buddleia davidii varieties, 'Royal Red' grows well in full sun and well-drained soil. It's also relatively easy to care for and requires minimal pruning to maintain its shape.

3. Buddleia alternifolia

If you're looking for a Buddleia with a unique appearance, 'alternifolia' is worth considering. Unlike most Buddleia plants, which have upright growth habits, this variety has a weeping form that adds a touch of elegance to any garden.

In addition to its distinctive form, Buddleia alternifolia produces clusters of fragrant lilac-coloured flowers in early summer. These blooms are highly attractive to butterflies, including swallowtails and hairstreaks, making it a valuable addition to any butterfly garden.

4. Buddleia globosa

If you're looking for a Buddleia that's native to the UK, 'globosa' is an excellent choice. This variety produces spherical clusters of bright orange-yellow flowers that bloom in mid-summer and are highly attractive to butterflies.

Buddleia globosa prefers well-drained soil and partial shade, making it suitable for a range of garden settings. It's also relatively easy to care for and doesn't require frequent pruning.

5. Buddleia 'Buzz' series

If you're short on space or looking for a compact Buddleia, the 'Buzz' series is an excellent choice. These dwarf varieties grow to just 3-5 feet tall and are highly attractive to butterflies.

The 'Buzz' series includes a range of colours, including pink, purple, and white, making it easy to find a variety that suits your garden's colour scheme. These plants also require minimal pruning, making them an ideal choice for low-maintenance gardens.

How to Plant Buddleia

Choosing the Right Location

Before you plant Buddleia, it's essential to choose the right location. These plants prefer full sun and well-drained soil, so choose a spot that receives at least six hours of direct sunlight per day and has good drainage.

Preparing the Soil

Buddleia plants prefer slightly acidic soil with a pH between 6.0 and 7.5. If your soil is too alkaline, you can add sulfur or peat moss to lower the pH. If your soil is too acidic, you can add lime to raise the pH.

Before planting, ensure that the soil is free from weeds and debris. You may also want to add some compost or well-rotted manure to improve soil fertility.

Planting Buddleia

To plant Buddleia, dig a hole that's twice as wide and deep as the root ball. Gently remove the plant from its container and loosen any tangled roots. Place the plant in the hole, ensuring that the top of the root ball is level with the surrounding soil. Backfill the hole with soil and water thoroughly.

Caring for Buddleia

Watering

Buddleia plants prefer moist soil but don't like to be waterlogged. Water deeply once a week, especially during hot, dry weather.

Fertilizing

Buddleia plants benefit from regular fertilization during the growing season. Use a balanced fertilizer, such as a 10-10-10 or 20-20-20, every four to six weeks.

Pruning

To keep Buddleia plants looking their best and encourage more blooms, it's essential to prune them regularly. Prune in early spring before new growth appears, removing any dead or damaged branches and cutting back last year's growth to two to three buds.

Buddleia FAQs

1. Is Buddleia invasive?

Some varieties of Buddleia can be invasive in certain areas. If you're concerned about the plant spreading, choose a sterile cultivar or remove spent flowers before they have a chance to produce seeds.

2. Can I grow Buddleia in a container?

Yes, Buddleia can be grown in containers as long as the pot is at least 12 inches deep and wide. Ensure that the soil remains moist and fertilize regularly.

3. How often should I water my Buddleia?

Buddleia plants prefer moist soil but don't like to be waterlogged. Water deeply once a week, especially during hot, dry weather.

4. Do Buddleia plants attract other pollinators besides butterflies?

Yes, Buddleia plants are highly attractive to a range of pollinators, including bees and hummingbirds.

5. When is the best time to prune Buddleia?

To keep Buddleia plants looking their best and encourage more blooms, it's essential to prune them regularly. Prune in early spring before new growth appears, removing any dead or damaged branches and cutting back last year's growth to two to three buds.

Choosing the best Buddleia for butterflies is an excellent way to attract these beautiful creatures to your garden. Whether you opt for a traditional Buddleia davidii or a more unique variety, like Buddleia alternifolia, providing nectar-rich flowers ensures that your garden will be buzzing with butterfly activity.

Remember to choose a location that receives plenty of sunlight and well-drained soil, and care for your Buddleia by watering regularly, fertilizing, and pruning. With a little effort, your Buddleia plants will thrive and delight both you and the butterflies that visit them.

References

• Buddleja davidii 'Black Knight'
• Buddleja davidii 'Royal Red'
• Buddleja alternifolia
• Buddleja globosa
• Buddleia 'Buzz' series