November.
I don't know what is "enough" but we saw plenty in mid-October. The peak season is supposed to start in November, though.
Mostly the butterflies were in one big tree but im guessing they aren't fully here yet as they had a sign that November to February was when the park was open. But it really is open now.
We saw several clusters of butterflies at the grove a few days ago, and it will only increase until November. We spotted several single butterflies flying around town and on the beach too!
500+. Population peaks in December.
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