Leucophyllum, commonly known as Texas Sage or Barometer Bush, is a hardy, drought-tolerant shrub native to the southwestern United States and parts of Mexico. It’s well-loved for its striking silver-gray foliage and vibrant purple, pink, or lavender flowers, which bloom in response to rainfall, giving it its “barometer” nickname. Below is a detailed description and care guide for this remarkable plant:

Care Instructions:

1. Light Requirements:

   • Leucophyllum thrives in full sun and requires at least 6 hours of direct sunlight per day to perform well.
   • This plant can tolerate some light shade, but it will bloom more abundantly in full sun.

2. Watering:

   • Texas Sage is extremely drought-tolerant once established, making it perfect for xeriscaping and water-wise gardens.
   • Water the plant deeply during its first growing season to help establish strong roots, then reduce watering significantly.
   • Once established, water only during prolonged dry spells, as overwatering can lead to root rot. It’s better to underwater than overwater.

3. Soil:

   • Leucophyllum prefers well-draining soil, especially sandy or gravelly soils.
   • It can tolerate slightly alkaline to neutral soil (pH 6.0-8.0), but it prefers slightly alkaline conditions.
   • Avoid planting in heavy, clay soils that retain water, as this can lead to root rot.

4. Temperature:

   • Texas Sage is well-suited to hot, dry climates and can tolerate heat up to 100°F (38°C) or higher.
   • It is hardy in USDA zones 8 to 10 and can handle light frosts, but in colder climates, it may need winter protection.

5. Humidity:

   • Leucophyllum does not require high humidity. It thrives in arid conditions and can tolerate dry air well, making it a perfect choice for desert landscapes or xeriscaping.

6. Fertilizing:

   • Fertilize lightly in early spring with a slow-release, balanced fertilizer. Texas Sage does not require heavy feeding and may suffer from excessive fertilization, leading to weak growth.
   • Avoid fertilizing during the blooming season to encourage strong flowering.