Mother May I?

12345678
Across
  1. 4. You may find a branch where I reside, I may run but I can’t hide.
  2. 6. When the clock strikes 12 you’ll be late but don’t you worry because I await.
  3. 7. In shining armor am I, here to save your life.
  4. 8. Red, green or yellow, I always come with a crunch, you can sometimes find me packed with your lunch.
Down
  1. 1. Up when I’m hot, down when I’m cold.
  2. 2. I slip, I slide, I sometimes hide.
  3. 3. I’m a tiny snack to those that love me, put me in the ground I become strong and mighty.
  4. 5. Birds & bees love for me gets you something good & sweet.