When you have enough residents.

The small fir trees.

If you sell it to the store it counts for that days food supply only. Leave it in the ground! Also save your shovel 'use' by planting seeds in the holes you make digging stuff up. When veggies are picked the hole disappears.

The odd colored apples are worth $100.

Veggies and fruits only. The pond is good for dragonflies when it rains though.