This Costco citrus espalier tree is a professionally pre-trained citrus tree shaped in the classic espalier style, with branches spread flat in a tiered, horizontal pattern ideal for planting against walls, fences, or trellises. Sold in a 12-liter (#5) nursery container, it arrives with an established form that makes it easy to mount along a flat surface and continue training as it matures.

Assorted varieties may include lemon, orange, mandarin, grapefruit, or lime depending on availability at your local warehouse. Espalier-trained citrus trees are a popular solution for small outdoor spaces, as they maximize fruit production while occupying minimal horizontal ground space. The flat growing habit also improves sun exposure across the entire canopy and makes harvesting straightforward.

Citrus trees require full sun — at least six to eight hours of direct sunlight daily — and well-drained soil. They are best suited for USDA hardiness zones 8–11 or in containers that can be moved indoors during frost. Regular watering, citrus-specific fertilization, and occasional pruning to maintain the trained shape will keep the tree productive for many years.