Garden Scheme
Plant library · Ornamental & Flowering Trees
Parkinsonia × 'Desert Museum'
Desert Museum Palo Verde is a thornless shade tree with green bark and a broad, open-looking presence at roughly 25 feet tall and 25 feet wide. Its profuse yellow flowers arrive from mid-spring into early summer, giving the canopy a strong seasonal role as well as shade. Use it where a single mature tree can define an open, sunny part of the landscape rather than squeeze into a narrow planting strip.
Space Desert Museum Palo Verde 20 ft apart, measured center to center (6.1 m).
The mature spread is about 25 ft (7.6 m), so plants set at that distance grow together into a closed canopy.
Treat 20 ft as a planning baseline — cultivar and local growing conditions shift the final footprint.
Compare with the full ornamental and flowering tree spacing chart
Place this tree in full sun where its mature canopy can shade a seating area, patio edge, or broad bed without crowding the route beneath it. Keep the trunk far enough from walls, fences, utility features, and paved circulation that the 25-foot spread has room to develop on all sides. Its very low water needs make it a natural fit for dry landscape zones; avoid locating it within a bed managed for frequent irrigation.
Set multiple Desert Museum Palo Verdes 20 feet apart, center to center. Each tree can ultimately spread about 25 feet across, so canopies may meet or overlap at that interval; use wider centers where distinct canopy outlines, clearer views, or more open circulation are priorities. Reserve the full canopy footprint in the plan, not just the planting hole, and leave a workable approach from a nearby path for establishment care.
Give Desert Museum Palo Verde an unshaded position so the canopy and spring-to-early-summer bloom are not competing with taller trees or structures. Group it with other very-low-water plantings so irrigation patterns remain simple and compatible. In a mixed bed, place lower plants outside the future trunk zone and allow enough open ground for the tree’s mature width.
Yellow bloom is concentrated from mid-spring through early summer, when this tree becomes a prominent visual feature and pollinator-friendly part of the planting. Plan nearby views and outdoor-use areas with that flowering period in mind. The tree is perennial, so its canopy should be treated as a long-term element of the layout rather than a temporary layer that can later be filled with another large plant.
This is a sizable tree for USDA Zones 8 through 11, not a compact accent for tight courtyards or foundation beds. A 25-foot mature width can cast shade well beyond the trunk, changing the available sun around nearby planting areas over time. Keep sun-dependent beds, vegetable plots, and solar-exposed gathering spaces outside the intended canopy area when full light is important.