Pomona is the Roman goddess of fruit trees, orchards, and gardens — from the Latin pomum, meaning "fruit." She is one of the few major Roman deities without a Greek counterpart.
Pomona Sprout is the Herbology professor in Harry Potter. The name is rising slowly.
Pomona does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Pomona reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.