Can I cover an evergreen shrub in winter?

Question

I have a small evergreen shrub that gets frost burn in winter. I had been told to use tar paper on it over winter, but I was concerned that since it is a broad-leaved evergreen it might need light in winter. Is there a good way to cover it that doesn't set it back?

Answer 1

Personally I would wrap the shrub, but leave the top open to the elements -- unless heavy snow load, damage, is a problem in your area, or the shrub you're protecting is susceptible to snow damage...

Bang into the ground a number of suitably sized timber stakes around the shrub:

• Suitably sized timber stakes = 1inch x 1inch (25mm x 25mm) to 2inch x 2inch (50mm x 50mm), with a point cut in one end -- this will make driving them into the ground that much easier.

• Cut the timber stakes to the height of the shrub you're protecting + 12inchs (300mm) minimum -- this will allow at least 12inchs (300mm) of the stakes to be embedded into the ground, thus giving your "protection system" adequate strength.

For maximum Wintertime protection:

• Install the stakes about 6 to 8inches (150 to 200mm) away from the shrub you're protecting.

• Wrap the stakes with something like:

  • Burlap.

  • A horticultural thermal/fleece blanket.

  • Chicken wire.

  • Plastic mesh.

• Fill the enclosure with something like:

  • Non-diseased Autumn fall leaves.

  • Straw.

For minimum to moderate Wintertime protection:

• Install the stakes as close as you can to the shrub you're protecting.

• Wrap the stakes with something like:

  • Burlap.

  • A horticultural thermal/fleece blanket.

The below articles, documents may also prove helpful/useful:

• Protecting Trees and Shrubs Against Winter Damage

• Winter Protection for Landscape Plants (direct link to PDF)

• Preventing Winter Injury to Landscape Plants (direct link to PDF)

• Cold weather - BBC Gardening Guides