Plumeria - Nursery Pot 2.3-2.5MFrangipani (Plumeria) Quick Care Guide Light & Water Prefers full sun for at least 6 hours a day. Water when the top 2 3 cm of soil is dry; allow soil to dry out between waterings. Humidity Thrives in moderate to high humidity; mist occasionally if needed. Maintenance Fertilize monthly during the growing season, prune dead flowers and stems, and repot every 2 3 years.