FAQs

Hemlock Woolly Adelgid (HWA) is an invasive insect pest that targets hemlock trees. Native to Asia, it was introduced to North America and has since become a significant threat to hemlock forests. These tiny aphid-like insects are less than 1mm in size and can be identified by the white, woolly masses they form at the base of needles on hemlock branches.

HWA targets Hemlock Trees, a key species in Nova Scotia's old-growth forests.

When HWA infests a hemlock tree, it feeds on its sap, disrupting nutrient flow. Over time, this weakens the tree, resulting in a 90-95% mortality rate in 4-15 years.

If left unchecked, HWA can cause:

• Loss of critical forest habitat for animals and plants.
• Erosion of stream banks due to lack of tree cover.
• A decline in water quality as streams warm and sediment increases.
• Reduced biodiversity and long-term forest degradation.

When visiting parks and natural areas, residents play a vital role in preventing the spread of Hemlock Woolly Adelgid (HWA). Here’s how you can help:

1. Clean Your Gear and Equipment

• Before and after visits: Clean hiking boots, camping gear, and outdoor equipment to prevent the spread of HWA from one area to another.
• Clothing and Pets: Check your clothing and pets for signs of insects or plant material that might carry HWA.

2. Avoid Moving Firewood

• Why It Matters: HWA can travel on firewood, and transporting firewood from one area to another can spread infestations.
• What to Do: Use only local firewood or purchase it from approved vendors near your destination.

3. Stay on Designated Trails

• Protect the Forest Floor: Sticking to trails reduces the chances of encountering infested trees or unknowingly spreading HWA to new areas.

4. Learn to Identify HWA

• What to Look For:
  • White, woolly masses at the base of hemlock needles.
  • Thinning or yellowing foliage on hemlock trees.

5. Be Mindful of Infested Areas

• Respect Closures: If specific trails or areas are closed to manage HWA, respect the restrictions.
• Limit Contact: Avoid touching or disturbing hemlock trees in areas with HWA.

6. Spread the Word

• Educate Others: Share information about HWA with friends and family who enjoy visiting parks.
• Advocate for Action: Support park initiatives to treat trees and monitor HWA infestations.

The pesticide being used is approved by Health Canada and is safe to use. However, out of caution, we ask the public to abide by closure notices and stay out of River Ridge Commons during the closure period. Once the closure period ends, these spaces will be safe for public use.

After the treatment, the spaces will remain closed to the public until 48 hours after completion.

The District of Lunenburg apologizes for any inconvenience caused by this closure and thanks you for helping us save our community's Hemlock trees.