Why will older, wilted foliage not sustain growing swallowtail larvae?

Answer

It will not sustain the growing larvae

The text explicitly states that older, wilted foliage is unsuitable because it will not sustain the rapidly growing larvae.

Why will older, wilted foliage not sustain growing swallowtail larvae?

#Videos

How to: Raise Black Swallowtail Butterflies from Eggs ... - YouTube

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