Spring is the peak for island wildflowers.

Yes — but the exact timing depends on the island. In temperate or Mediterranean islands (think Greek Isles, Canaries, or the San Juans), the bloom window is roughly March through May. That’s when the weather warms up but before the summer heat scorches everything.

Islands have weird microclimates. Altitude matters too. A lower-elevation coastal trail might be green in February, while the same island’s highlands won’t peak until June. If you’re chasing a specific flower (California poppies on Catalina, or bluebells on Skomer), check the local park service site a week before you go — they usually post bloom updates.

Summer can still be good on northern islands (Iceland’s lupines peak in July), and fall has its own charm (heather on Scottish islands). But if you want the classic carpet of wildflowers, spring is your safest bet.

You can’t time it perfectly from a desk. Just go.