Penstemon Pinifolius ‘Mersea Yellow’ (Mersea’s Yellow Pineleaf Penstemon) - Golden trumpets glowing on needle-like leaves.

A rare and cheerful twist on the usually red Pineleaf Penstemon, ‘Mersea’s Yellow’ shines with clusters of buttery-yellow tubular flowers. Compact, evergreen, and long-blooming, it’s a jewel for hot, dry gardens.

Plant Details:

• Water Needs: Very low; drought-tolerant once established

• Sun Needs: Full sun

• Soil Requirements: Well-drained sandy or rocky soils

• Growing Zone: USDA Zones 5–9

• Cold Hardiness: Down to ~–20°F (–29°C)

• Mature Size: 12–18 in tall x 12–18 in wide

• Native Origin: Southwestern USA (cultivar selection)

• Best Substitutes For: Red Pineleaf Penstemon, Yellow Trumpet Vine

• Landscape Uses: Rock gardens, borders, xeric gardens