Acorn Squash Plant Number One! This plant made it to the top of our trellis first (closely followed by plants 2 and soon number 3!) They are obviously not done growing... so what to do with them? Last year's acorn squash (Table Queen) fit well on this trellis... these Royal Acorn squash plants definitely have a different growing habit. We're going to see if we can add on some trellising above them!