“You can start with the seed of an avocado. Wash it. Use 3 toothpicks to suspend it broad-end down over a water-filled glass to cover about an inch of the seed. Put the glass in a warm place out of direct sunlight and replenish water as needed. You should see the roots and stem start to sprout in about 2-6 weeks. (If you’ve followed this process so far and have not seen roots or a stem sprout in more than 6-8 weeks, give another seed a try!) When the stem is 6-7…