Browntail moth in Prince Edward Island: When It Shows Up and What Stops It
As of 2026, Prince Edward Island has not reported an established, spreading population of browntail moth the way Nova Scotia and coastal Maine have.
Home & garden, state by state
Everything we have worked out for Prince Edward Island: what to plant and when, which varieties finish in time, the pests that actually turn up here, and the jobs that pay off month by month. We also cover the rest of the property, from lawns and soil to home care and energy, because a garden rarely stops at the vegetable bed.
The numbers first, because everything else follows from them. Measured at the weather station in Charlottetown, the last spring freeze falls around May 16 and the first fall freeze falls around October 17, 1,569 growing degree days in the year.
That is enough for early varieties, tight for anything late. Garlic does well: 34.8 weeks below 40 °F, comfortably past the six it needs to form a proper head.
Elsewhere on the property in Prince Edward Island: the pests that turn up here.
Figures from Environment and Climate Change Canada. A state is not one climate: elevation, a large lake or the coast can move these dates by two weeks either way, so check your own county with the extension service before you spend money.
As of 2026, Prince Edward Island has not reported an established, spreading population of browntail moth the way Nova Scotia and coastal Maine have.
Prince Edward Island’s cool climate suits fescues and bluegrass, not warm-season turf, and this explains when to seed, feed and mow through the year.
Prince Edward Island garlic goes in the ground in late September, timed against Charlottetown’s average October 17 first frost, arithmetic included.
Every cultivar in Prince Edward Island’s garlic catalogue shares a late-September planting window, timed against Charlottetown’s average first fall frost, giving cloves time to root before the ground freezes.
Prince Edward Island’s cold winters comfortably meet garlic’s vernalization needs, so gardeners can plant hardneck varieties in late September and expect full heads by summer.
Charlottetown’s climate normals put Prince Edward Island’s frost-free season at 153 days on average, which drives every planting and variety decision below.
How to work out your own tomato transplant date in Prince Edward Island using Charlottetown’s average frost dates and catalog days-to-maturity.
Using Charlottetown’s average frost dates, this guide sorts fourteen catalogue tomato varieties by how much margin each leaves before the first fall frost.