Mount Royal Plum
Prunus 'Mount Royal'
Mount Royal Plum (Prunus 'Mount Royal') is a tree suited to the Colorado Front Range, rated "Recommended" on the 2024 Front Range Tree Recommendation List. It matures to about 12 to 20 ft tall and 12 to 18 ft wide, needs medium water, and prefers full sun. Self fruitful plum.
medium water12 to 20 ft tall and 12 to 18 ft wideToxic to dogs
Photos
- Photo 1: no rights reserved
- Photo 2: (c) Nicholas A. Tonelli, some rights reserved (CC BY)
- Photo 3: no rights reserved
- Photo 4: (c) Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman
At a glance
Will it survive here?
- Hardiness zones
- USDA 4 to 8
- Water needs
- medium water
- Sun
- Best in full sun.
- Soil
- clay, loam, sandy
- Soil pH
- 6.0 to 8.2
- Hail tolerance
- moderate
- Wind tolerance
- moderate
- Salt tolerance
- moderate
How big, what shape?
- Mature size
- 12 to 20 ft tall and 12 to 18 ft wide
- Mature form
- Rounded
- Spacing / clearance
- ~18 ft of clearance
- Growth rate
- Moderate
- Lifespan
- Medium
What it looks like, and when
- Bloom time
- early spring, mid spring
- Foliage
- Deciduous
Who else benefits
- Pollinator value
- high
- Deer
- Not rated
- Colorado native
- No
Also worth knowing
- Fire rating
- Not rated
Common problems on the Front Range
- Borers (peachtree and lesser borer)
- Black knot (galls on twigs)
- Aphids and leaf curl
These are general tendencies for this group of plants on the Front Range, not a diagnosis. Many are stress-driven and preventable with good siting and watering. For a specific plant or an active problem, consult a certified arborist or your local CSU Extension office.
Frequently asked questions
- Is Mount Royal Plum good for the Colorado Front Range?
- Yes, Mount Royal Plum is a well-suited tree for Colorado's Front Range, rated "Recommended" on the 2024 Front Range Tree Recommendation List.
- How big does Mount Royal Plum get?
- It matures to about 12 to 20 ft tall and 12 to 18 ft wide.
- How much room does Mount Royal Plum need?
- Give Mount Royal Plum about 18 ft of clearance from buildings, fences, and other trees so the mature canopy isn't crowded.
- What shape does Mount Royal Plum grow into?
- Mount Royal Plum typically grows into a broad, rounded crown, the classic shade-tree silhouette. This is the species' usual mature form, named cultivars (columnar, weeping, or compact selections) can differ, so check the specific cultivar.
- Is Mount Royal Plum hardy on the Front Range?
- Mount Royal Plum is hardy in USDA 4 to 8. The Colorado Front Range spans roughly USDA 4b to 6a, so it is well within range.
- How much water does Mount Royal Plum need?
- It needs medium water once established.
- How fast does Mount Royal Plum grow?
- Mount Royal Plum is a moderate-growing tree. Growth rate depends on water and site conditions on the Front Range.
- How long does Mount Royal Plum live?
- Mount Royal Plum has a moderate lifespan for a Front Range tree. Actual lifespan varies with site, water, and care.
- Is Mount Royal Plum safe for dogs?
- No. Mount Royal Plum is considered toxic to dogs. Keep pets away and check with your vet.
- Is Mount Royal Plum prone to pests or disease on the Front Range?
- Mount Royal Plum can be affected by borers (peachtree and lesser borer) and other issues common to this group on the Front Range. These are general tendencies, not a diagnosis, many are stress-driven and preventable with good siting and watering. For a specific plant or an active problem, consult a certified arborist or CSU Extension.
