Here are a few steps to protect your property. Small trees can be especially vulnerable, so you'll need to stake them securely on three sides with a flexible material. Make sure you use one that won't rub the bark of the tree.
Pantyhose works well.
You can still mow damp grass. Just place the blade at the highest cutting level possible. If it's grass planting season, wait at least a week to ten days before planting seed to avoid it being washed away. Before a storm, bring potted plants inside. Larger plants may also need to be brought inside to avoid flooding.