First, What is a companion plant?
Plant society members often think of their ‘pet’ plants as the stars of any border: flowering perennials, shrubs, trees and climbing plants that are guaranteed to turn heads. Think of peonies, roses, hydrangeas, day lilies, dahlias, delphiniums, hollyhocks, or even topiary as in the picture of Arley Hall, above.
Companion plants are the ones with more of a supportive role. They are chosen to complement the feature plants, contrasting or harmonising with them, in colour, texture or form. I can’t imagine a traditional herbaceous border without companions to fill in the gaps and create a harmonious tapestry. While companions add to the richness and diversity of the garden, they will not compete too aggressively for the limelight or for resources such as food, water or space. They create a healthier ecosystem by attracting beneficial insects.
Many of my favourite companion plants are long-flowering, allowing the garden to transition seamlessly from one season to another. You might have overlooked every one of the companion plants I’ll be highlighting in this short series of posts, but I believe they’re worth their moment in the spotlight.
Astrantias are such useful, trouble-free companion plants that you’d be hard pressed to find a major English garden without them. Masses of small umbels are held airily on wiry stems like a profusion of stars, as their Latin name suggests. The intricate, lacey flowers are encircled by papery bracts of varying lengths. Continue reading
Burgundy canna leaves and the bright green crocosmia provide an interesting contrast to the lilac phlox, particularly as the sun is highlighting the leaves. In the background, arching polygonatum leaves are interspersed with a few heart-shaped hosta leaves. This is an example of companion planting for sequential flowers at the Sir Harold Hillier Gardens in Romsey, England.
I was recently asked what my plans were for the blog in 2017. One wish sprang to mind. I’d like a TARDIS (for people who are not sci-fi fans, that would be a working version of Doctor Who’s time travelling machine). Pretty please!
I’d find it handy for no end of reasons. It would mean I can travel, take pictures, select and edit them, write posts AND publish them seasonally while the plants are still in bloom. I could visit any garden at its absolute peak at the golden hour and be back in time for tea with my sweetheart… (sigh).
This summer, you’ll be much more likely to see me out trying to capture different forms of verbascums on my iPhone than to see me playing Pokémon Go.
I added this one, Verbascum ‘Caribbean Crush’, to my virtual collection at the recent RHS Tatton Park Flower Show. The flowers open upwards as the sturdy spire lengthens, starting off a soft, peachy yellow, gradually deepening to a burgundy copper as they age. The effect is of two cultivars in one: very striking.
To accentuate the beauty of a shrub rose, allow it to mingle with other plants, while indulging its desire to be the star of the show. Companion planting has a practical purpose as well as a creative one. Foliage of other plants can help to cover the bare soil and gnarled branches often found at the base of roses, and any mixed planting always attracts a broader range of beneficial insects, helping to keep the rose healthy. Continue reading
Dusk was falling when I saw these sweet little roses tumbling amongst some kind of daisies. I wouldn’t have imagined they would make good plant companions, but I thought they looked a pretty pair – the ornate, fully double blooms seemed to contrast well with the simple candour of the daisies. Continue reading