What Grows Under Holly Trees? - Knowledgebase Question

Portland, OR
Avatar for janbehrs
Question by janbehrs
November 13, 2001
I have mature holly trees amid perennial beds. I have had no luck with plantings under them -- they suck all the moisture. Yet the soil is nice and light, because of all the leaf mulch, I imagine. What will thrive under holly trees? Right now all I have are daffodils, but I need other season interest. Epimedium? They like dry shade, supposedly, but these are tough conditions. My newest thought is to cover the area with gravel and plant sedums but I'm not sure there would be enough light for them.

Answer from NGA
November 13, 2001
You've identified the two most likely causes for failure of perennials to thrive when planted under trees - they must compete with tree roots for water and nutrients (the trees usually win!) and the shade can be too dense for some plants. Daffodils should be happy under your hollies, and other choices include Coral Bells (Heuchera) Irises (Iris), Nepeta (Nepeta subsessilis) Penstemons (Penstemon), Sword Fern (Polystichum munitum) and California Blue-Eyed Grass (Sisyrinchium bellum). You might also consider Heavenly Bamboos (Nandina domestica) Cotoneaster, Hypericum, Lamium, and Viola. Many annuals will be quite happy under your hollies. Because they have short lifecycles you'll need to replace them often, but they can provide lots of color from spring through autumn. I'd stay away from sedums - they require full sunshine for best growth. Hope the above suggestions help you perk up the planting area beneath your hollies.

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