A female monarch lays its eggs (1) on a sprouted milkweed plant. The eggs hatch in four to five days producing tiny yellow, black and white banded larvae (caterpillars). These caterpillars (2) will feed solely on milkweed and eat enormous quantities because they are growing fast.
1 A single interior French door with multiple panes of glass typically costs $50 -$200 for a basic model, but can cost $ 200 -$1,000 or more, depending on size and style.
1 Sold in pairs, they begin at around $1,000 and can cost up to $3,500 for high end French doors. 2  Exterior door replacement in an existing space costs around $250. 3  To create a new space for sliding glass or French doors it might cost $500 to $1,500.