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Plant library  ·  Ornamental & Flowering Trees

Golden Chain Tree

Laburnum x watereri

Golden Chain Tree, Laburnum × watereri, is a small ornamental tree that reaches about 20 feet tall and 15 feet wide. Its dramatic yellow, wisteria-like flower clusters make a strong late-spring focal point, so give it a position where the canopy can be viewed from a patio, path, or main window. It suits USDA hardiness zones 5 through 7 and can bring pollinator activity into a sunny planting.

  • Pollinator friendly
  • Deer resistant
Sunlight Full Sun
Water Moderate
USDA zones 5–7
Spacing 15 ft
Mature size 20 ft tall, 15 ft wide
Bloom Late spring

Placement and use

Use Golden Chain Tree as a single focal tree at the back or side of an open bed, rather than crowding it into a narrow foundation strip. Its 20-foot height can give lower shrubs and perennials a backdrop while leaving the flower display visible above them. Keep a clear approach from a path or lawn edge for routine pruning and cleanup, and allow its eventual canopy to shade only plants that can accept changing light.

Spacing and mature footprint

Plant trees 15 feet apart, center to center. That spacing matches the expected 15-foot mature width, so neighboring canopies will meet rather than overlap heavily as they fill out. For a single tree, reserve a roughly 15-foot-wide canopy zone and avoid placing permanent seating, narrow walkways, or sun-dependent beds directly beneath its future spread. Set nearby lower plantings back enough to preserve access around the trunk.

Three plants set 15 ft apart, center to center; shaded circles show the 15 ft mature spread.

Sun, water, and soil

Choose a full-sun position with well-drained soil and moderate, even moisture. A bed that drains after rain is more suitable than a low pocket where water lingers around the roots. In warmer parts of its range, a site with relief from intense late-afternoon heat can make placement more forgiving while still keeping the tree in strong light.[1][2]

Seasonal notes

The long yellow flower racemes are the main event in late spring, followed by a leafy summer canopy. As a deciduous tree, it opens the same space to more light after leaf drop, which can be useful near borders designed for spring bulbs or other plants that benefit from a brighter dormant-season bed.[1][2]

Planning caveats

This tree is best planned for the cooler conditions associated with zones 5 through 7. It can perform poorly where summers are persistently hot and humid, and a protected position can reduce exposure to severe winter conditions. Avoid making it the sole structural tree in a difficult microclimate; give it a sheltered, well-drained site with room to develop.[1]

Growing facts

Botanical name
Laburnum x watereri
Type
Fruit Tree
Category
Ornamental & Flowering Trees
Lifecycle
perennial
USDA hardiness zones
5–7
Sunlight
Full Sun
Water
Moderate
Plant spacing
15 ft
Mature size
20 ft tall, 15 ft wide
Bloom season
Late spring
Pollinator friendly
Yes
Deer resistant
Yes
Native to North America
No

References

  1. Laburnum × watereri - Plant Finder — Missouri Botanical Garden
  2. Laburnum × watereri | Voss's laburnum — Royal Horticultural Society

Editorial content updated 2026-07-20.