The Magic of Garden Companion Planting at Old Castle Cottage

Here at Old Castle Cottage one of the secrets to its timeless charm lies in companion planting.

A true cottage garden feels natural and abundant, but behind that romantic, slightly wild look is some thoughtful pairing. Let’s explore some of the stars of the Old Castle Cottage garden and why planting them together creates such beauty and harmony.

Roses & Their Companions

Roses are the undeniable queens of the cottage garden. But did you know they’re happier (and healthier) when surrounded by the right friends.

• Phlox softens the base of rose bushes with delicate clouds of pink, white, or purple, covering bare stems and extending the color show. Plus phlox attracts pollinators that help the roses flourish
• Alliums — those whimsical, lollipop-shaped blooms — repel aphids and rose beetles, acting as natural pest control.
• Lavender and catmint (Nepeta) are classic companions too, adding scent and attracting beneficial bees and butterflies.
• Clematis– this is a romantic powerhouse. Clematis vines happily twine up and through the roses, creating a multi-layerd visual display. The key is to choose clematis that have similar growing conditions but staggered bloom times. My favorite is when I combine my pale pink roses like Gentle Hermoine and Clematis Jackmanii.

Peonies: The Showstoppers

Peonies bring lush, old-fashioned romance with their enormous blooms. To complement
them:

• Foxgloves (Digitalis) rise up elegantly behind or beside them, adding vertical drama. They thrive in similar conditions (partial shade , moist soil) and bloom around the same time, giving you layered height and texture
• Nepeta covers the base and are blooming long after the peonies have put on their show
• Delphiniums, with their tall spires of blues and purples, create a striking color contrast and draw the eye upward. 

Why Companion Planting Matters

Companion planting isn’t just about pretty combinations — it’s about balance and resilience.
✅ Certain plants deter pests naturally, reducing the need for sprays.
✅ Others improve soil conditions or provide beneficial shade.
✅ Mixing heights, colors, and bloom times keeps the garden looking full and vibrant across the seasons.
✅ Diversity attracts pollinators, birds, and beneficial insects, creating a healthy little ecosystem.

Other Cottage Garden Favorites

At Old Castle Cottage, we also love weaving in:

• Campanulas (bellflowers) — charming, cottagey, and bee-friendly.
• Hardy geraniums — the perfect low-growing filler with delicate flowers.
• Salvias– their striking contrast to the softness of the roses
• Aquilegias (columbines) with their delicate nodding blooms, perfect for weaving
  through borders.

A Living Tapestry

Companion planting lets us work with nature, not against it — creating a garden that’s not only beautiful but
also sustainable.

So next time you stroll among the roses, peonies, foxgloves, and delphiniums, remember: they’re not just growing side by side — they’re supporting each other, just like a good community should.