The PH of a solution can be measured using the H+ ions concentration present in the solution. PH= -log(H+) H+ is the hydrogen ion concentration. or by knowing the OH- ion concentration. PH= 14- (-log(OH-)-log(OH-) is the pOH of the solution.
If you see a brown patch under the stem it's going to be a little gross inside. If you see a nice yellow-green patch you have a perfectly ripe avocado. Just make sure nobody at the grocery store notices you flicking the stems off a ton of avocados.
Season for Planting Hass Avocado. Hass avocados have a dark purple to almost black pebbly skin with excellent flavored fruit. Avocados (Persea spp.) are evergreen trees that grow delicious green fruit that surrounds a large pit or seed. Avocados grow in the warmest regions of the United States. You can propagate trees from seed, but to do so results in trees that vary in quality and quantity of fruit. For these reasons, budding and grafting are common methods of propagation.