Are you designing an ornamental garden with vibrant, eye-catching colors? If so, purple-flowering perennials are a must-have! Their stunning hues bring elegance, charm, and even attract pollinators like bees and butterflies.

Below are 10 of the best perennial plants with gorgeous purple flowers that will transform your garden into a blooming paradise!


1️⃣ Butterfly Bush (Buddleja davidii) 🦋🌸

purple flowering perennials garden ornamental butterfly bush

Often mistaken for a tree, the Butterfly Bush is actually a shrub that attracts both bees and butterflies. It thrives in full sun, needs shelter from strong winds, and rewards you with vibrant blooms in mid-summer.


2️⃣ Alliums 🧄💜

purple flowering perennials garden ornamental alliums

Alliums, commonly known as ornamental garlic, produce large, globe-shaped purple flowers. Not only are they visually striking, but they also help repel garden pests. They are low-maintenance and thrive in well-drained soil with plenty of sunlight.


3️⃣ Veronica (Speedwell) 🌿💜

The Speedwell is a pollinator-friendly plant that attracts bees, beetles, and ladybugs. It flourishes in sun or partial shade, blooming from June to October, depending on the variety.


4️⃣ Lavender (Lavandula) 🌿💜

A fragrant, multipurpose plant, lavender is perfect for gardeners who love both beauty and utility. It thrives in poor, well-draining soil and requires full sun. Plus, it’s an excellent companion plant that repels pests while attracting beneficial insects.


5️⃣ Catnip (Nepeta cataria) 🐱💜

Also known as catnip, this plant is beloved by felines but is also useful for repelling slugs and snails. It grows well in sunny spots and is a low-maintenance addition to any garden.


6️⃣ Sage (Salvia) 🌿💜

Closely related to lavender, sage is both medicinal and decorative. It thrives in sunny areas with light, well-drained soil and is resistant to drought. Sage is also commonly used in cooking and herbal medicine.


7️⃣ Garden Phlox (Phlox paniculata) 🌸💜

With its lush, colorful blooms, garden phlox is a favorite among gardeners. Available in shades ranging from white to deep purple, the ‘Purple Sprite’ and ‘Ultraviolet’ hybrids stand out for their rich violet hues. It prefers moderate sun and is well-suited for west-facing gardens.


8️⃣ Clematis 🌿💜

A stunning climbing plant, clematis is perfect for decorating fences, walls, and pergolas. While some varieties can be invasive, cultivated species are dense, floriferous, and easy to maintain. Many varieties bloom twice a year, adding long-lasting color to your garden.


9️⃣ Anemone 🌺💜

Native to Asia, the anemone features delicate purple, mauve, red, and white flowers. It thrives in shade or partial shade, requiring rich, moist, well-draining soil to flourish. Its ornamental value makes it a popular landscaping choice.


🔟 Purple Foxglove (Digitalis purpurea) 🌿💜

With its impressive bell-shaped flowers, purple foxglove is a spectacular addition to any garden. It prefers partial shade, grows in light, humus-rich soil, and blooms from May to July. However, beware—this plant is toxic if ingested!


🌟 Other Must-Have Purple Flowers

make hydrangeas bloom coffee grounds compost wood ash

Beyond the top 10, consider adding:
✔️ Columbines (Aquilegia)
✔️ Asters
✔️ Irises
✔️ Hydrangeas (Hydrangea spp.)
✔️ Petunias

These plants complement any garden and add depth, texture, and long-lasting beauty.


🌿 Final Thoughts

A garden filled with purple-flowering perennials creates a stunning, peaceful, and pollinator-friendly space. Whether you choose fragrant lavender, elegant clematis, or vibrant alliums, these perennials will keep your garden blooming year after year.

Which purple-flowering plant will you add to your garden first? 💜🌿