Answer:
The first passage represents nature as something wild and dangerous, by describing the yucca tree with some risky, violent and dangerous words, which are used to warn us about this plant and its characteristics.
On the other hand, the second passage represents nature as something soft, calm, and beautiful, by describing daffodils. Daffodils are represented as something delicate and beautiful, so the vision of nature is quite different from the first passage. In this case, nature is described as something soft and wonderful, completely different from bayonet-pointed leaves and a fence of daggers.
