Award Winning Garden Designer, TV Presenter & Horticultural Expert at Garden Ninja
Answered 4 months ago
Hi I'm Lee Burkhill, the Garden Ninja, and I'm absolutely your expert for this piece. As an award-winning garden designer, RHS qualified horticulturist with over 30 years of hands-on gardening experience, and presenter on BBC1's Garden Rescue, I've dealt with snow damage across hundreds of gardens throughout the UK. I know exactly which plants are vulnerable and why, from the obvious culprits like bamboos and conifers through to the surprising ones that catch gardeners out every winter. I can provide proper horticultural reasoning behind why certain plants suffer snow damage, the mechanics of branch failure under snow loading, and practical advice on prevention and recovery. I've guided thousands of gardeners through winter plant care via my YouTube channel (73,000+ subscribers) and comprehensive guides on gardenninja.co.uk, so I know how to deliver expert advice in an accessible, no-nonsense way that your readers will actually understand and use. I can distinguish between plants that genuinely need to be removed versus those that are fine left alone, which is crucial for a piece like this. Too many articles create unnecessary panic when most plants are absolutely fine with snow cover, but some defo need help! Drop me a line at lee@gardenninja.co.uk and let's get this sorted. I can turn this around quickly and provide high quality, quotable expertise that'll make your article stand out. Cheers, Lee Burkhill Garden Ninja BBC Garden Rescue Designer & Presenter RHS Qualified Horticulturist www.gardenninja.co.uk
I'll be honest--I'm a marketing guy for urban apartment buildings, not a gardening expert. But we manage rooftop terraces and common areas across our Chicago, Minneapolis, and Vancouver properties, and I've seen what heavy snow does to our landscaping investments. Our maintenance teams always clear snow from our boxwoods and arborvitaes immediately after storms. We learned this the hard way at one of our Minneapolis properties where we lost three mature boxwoods (about $800 in replacement costs) because snow sat on them for just 48 hours. The branches splayed out permanently, and they never recovered their shape. The same data-driven approach I use for resident feedback applies here--we started tracking which plantings required the most winter maintenance requests. Broad-leafed evergreens and multi-stemmed shrubs topped the list at 60% of our snow damage incidents. Now our landscape contracts specifically include immediate snow removal from these plants after any storm over 4 inches. One trick our Vancouver property manager taught me: knock snow off before it freezes overnight. Wet snow that refreezes becomes 3x heavier and causes exponentially more branch damage. We reduced our winter plant replacement budget by 40% just by timing our snow removal better.
After 15+ years doing full-service landscaping in Ohio, I've replaced enough snapped branches to know which plants absolutely need snow cleared. The two I'm most vigilant about are our native Redbuds and Japanese Maples--their branching structure makes them snap magnets under wet snow loads above 6 inches. Redbuds are especially tricky because their horizontal branching pattern creates natural snow shelves. I've seen 8-year-old specimens lose 30-40% of their canopy structure from a single heavy March snowfall when that wet spring snow sits overnight. The damage isn't just aesthetic--those breaks create entry points for disease and cankers that can kill the tree within two seasons. One pattern I've noticed in Springfield is that ornamental grasses like Maiden Grass cause problems people don't expect. When snow loads them down, they bend into walkways and driveways, then freeze in that position. I had a client lose an entire $400 planting border because they didn't bundle and stake them before winter--the crowns split when the ice-loaded foliage pulled away from the root ball. My crew's rule is simple: anything with a V-shaped branch structure or multiple stems from a single point gets cleared within 12 hours of snowfall. That includes Burning Bush, Lilacs, and younger Dogwoods. We've cut our spring damage repair calls by about 65% since implementing this protocol five years ago.
One of the simplest ways to prevent snow damage is to protect vulnerable plants before the first storm hits. I've kept my windmill palms alive for thirteen years in a freeze prone area using two preventive steps that work far better than trying to knock snow off after the fact. First I wrap the crown and upper fronds in a breathable frost bag before temperatures drop. This prevents wet, heavy snow from accumulating on individual fronds and eliminates the downward weight that usually causes bending and snapping. The second step is adding a strand of old style Christmas lights underneath the wrap. They produce a gentle, consistent warmth that keeps the snow from freezing solid on contact and reduces the risk of ice forming inside the crown. Windmill palms are especially vulnerable to crown rot and freeze damage when snow packs tightly between fronds so a little warmth goes a long way toward keeping the plant alive through storms. This same approach applies to other broadleaf evergreens and any plant with an upright structure that traps snow. Protecting the shape and preventing ice formation is far easier than repairing damage later. Prevention is almost always more effective than shaking snow off once it has already compacted. Albert Richer, Founder, WhatAreTheBest.com.
We enjoy our garden as if it were a public sculpture space we see the shape of our clipped topiaries (our "gallery" pieces) in terms of how they fit together and look good. Boxwood balls and yew balls (the balls we have clipped into) are the ones that I always knock snow off because their foliage is so dense and will hold snow like a bowl. The weight of the snow on them could flatten the backside and take away the nice shape we've worked at for years to create. I remember a year ago, there was a late snow that came down wet and stayed overnight on a large boxwood ball next to the front door; when I looked at it in the morning, one side had slumped outward. It lived through that storm, but I knew then that the weight of the snow could also damage the design of your garden as much as it damaged the plant itself. Since then, I have been careful to gently remove heavy snows from the lower part of the shrubs and trees using either my hands or a soft brush while holding up the branches as I go, and I do not touch any ice that has formed on the branches this has to melt before it can be removed. If you are like me and love clipped and formal gardens, my best advice is to treat the dense, tight evergreen species like boxwood and yew, etc., as priority items after heavy snow falls. Protecting the shape of these plants is just as important as protecting their health.
I reside in an area of the U.S. that experiences snow regularly, and I utilize a row of Arborvitae to block the wind from blowing down my driveway. This is the plant I inspect after every storm. The long, thin silhouette of Arborvitae creates a barrier for privacy; however, this same silhouette also causes the plant to become a snow collector. When there is too much weight on top of the branch, it will bend outward or break. About three years ago, a wet spring snow event caused two of the Arborvitae to nearly fall over. At the point I discovered what happened to the trees, the branches had developed creases in them. To date, neither branch has completely regained its original position, and the gap in the hedge remains apparent. Today, when the snow is fresh, I am walking the row of Arborvitae, and I gently press upward on the branches with a broom handle or my glove-covered hand. In doing so, I allow the snow to melt off in small increments. I do not pull or violently shake the branches; that is when I would hear the devastating snap. If you are using Arborvitae (or other columnar evergreen) to create a living fence, I believe they should be on your "Always Knock Snow Off" list. With a couple of gentle passes through your living fence during each snow event, your privacy screen will remain intact for many years.