Hi, Well I would not use the term "arid dry" on lavender. Lavender is a Mediterranean plant so it likes full sun, warm temperatures and good drainage. That means, even if it rains a lot, the plant will be fine if the soil doesn't stay muddy and clay-like. For example, in my Iowa garden I have excellent luck with my lavender because they are planted at the edge of a pathway that has a sand base to keep the tones in place. So, the soil there is rich and organic with a little bit of sand to increase drainage. Just be sure you have an English lavender, Lavender angustifolia (varieties Munsted is a hardy one) because the French lavenders won't overwinter in Ohio. They are too tender.