I saw on the net somewhere that you should not pick squash until the stem is brown. This site didn't mention that. When should I pick my squash? My butternut is huge, some others are very small and some are medium.
Certified GKH Gardening Expert
We would not recommend waiting until the stem is brown necessarily. If the squash is the correct color for its type, feels heavy for its size and sounds somewhat hollow when thumped, then it is ready to be harvested.