How to Lower Soil pH. In chemistry, pH is a measure of how acidic or basic a substance is. The pH scale runs from 0 to 14 — a pH near 0 is extremely acidic, a pH near 14 is extremely basic, and a pH of 7 is perfectly neutral.
How to Prune Lavender - never prune in fall or winter and never cut back to the ground. Prune in spring and early summer after first leaf buds emerge to cut out dead wood and then prune again just after flowers fade - deadhead and shape plants then, leave