Limber Pine

Pinus flexilis

Pinaceae · coniferous tree · introduced

Last updated May 11, 2026

Pinus flexilis (Pinaceae) is a five-needled pine native to the Rocky Mountains and adjacent ranges from Alberta to New Mexico and west to California and Nevada. It grows 30 to 50 feet tall, forming a broad, pyramidal to rounded crown. The common name refers to the flexible young twigs that can be bent without breaking.

Limber pine grows in full sun on well-drained, rocky soils at moderate to high elevations. It is drought tolerant and wind resistant. Like other five-needled pines, it is susceptible to white pine blister rust, though some populations show resistance. The species is long-lived, with some individuals exceeding 1,000 years. Hardy in Zones 4a to 8b.

Plant Profile

Size & Form

Height

30–50 ft

Spread

15-35 ft

Growth Rate

Slow

Size at 20 yr

25 ft

Lifespan

Long-lived

Site Requirements

Light

Full Sun

Soil Drainage

Well Drained

Soil pH

5.7-6.5

Water

Low

Drought Tolerance

High

Hardiness

Zones 4a–8b

Ornamental Interest

Bloom Time

Non-flowering

Origin

Pacific Northwest native

Damping-offHigh

Seedling Emergence - Postemergence Damping-off Risk

Pine needle scaleHigh

Crawler Emergence

Armillaria Root RotModerate

Active Below-ground Growth

Cyclaneusma Needle CastModerate

Spring Needle Infection

+ 4 more — see full disease and pest lists below

Diseases: Regionally Documented (24)

Endocronartium harknessii Western Gall Rust Cronartium ribicola White Pine Blister Rust Phytophthora spp. (P Phytophthora Root Rot Lophodermium spp. Lophodermium Needle Cast Lophodermella concolor Lophodermella Needle Cast Elytroderma deformans Elytroderma Needle Cast Arceuthobium spp. (parasitic plant) Dwarf Mistletoe Armillaria spp. — primarily A Armillaria Root Rot Symptom category — not a single disease Canker Cyclaneusma minus Cyclaneusma Needle Cast Several soilborne Damping-off Dothistroma septosporum (and/or D Dothistroma Needle Blight (Red Band) Gray Mold Heterobasidion occidentale Otrosina & Garbel Heterobasidion Root Disease In most Hypocotyl Rot and Root Rot Davisomycella medusa Medusa Needle Blight Rhabdocline spp. including R Needle Cast Needle Rusts Bursaphelenchus xylophilus Pine Wilt Excess sodium chloride Salt Damage Sirococcus conigenus Sirococcus Shoot Blight Fomitopsis officinalis, Porodaedalea pini, and other wood... Stem Decay Diaporthe vaccinii or Diplodia tip blight agents Tip Blight Multiple fungal species cause twig blight on different ho... Twig Blight

Pests: Regionally Documented (18)

Eriophyidae (family) Eriophyid mite Pineus strobi Pine bark adelgid Dioryctria spp. Coneworm Pine Aphid Pissodes strobi White pine weevil Tetranychidae Spider mite Synanthedon sequoiae Sequoia pitch moth Pine Needle Sheathminer Pine Sheath Miner Chionaspis pinifoliae Pine needle scale Pine Butterfly Coloradia pandora Pandora moth Dendroctonus ponderosae Mountain pine beetle Rhyacionia buoliana European pine shoot moth Nuculaspis californica Black pineleaf scale Neodiprion spp. Pine sawfly Eulachnus agilis Powdery pine needle aphid Otiorhynchus spp. Root weevil Schizolachnus piniradiatae Woolly pine needle aphid

Phenological Calendar

View full calendar (5 stages)

Stage	Typical Window	What to Look For
Candle elongation BBCH 11	May 15-Jun 15	Pale, elongating shoots (candles) covered in papery scale leaves. Five needles per fascicle emerge as candle extends
Pollen release BBCH 61	Jun 15-Aug 15	Male strobili usually clustered at base of current year's candles; pollen visible
Pollen shed complete BBCH 69	Jul 15-Aug 31	Female conelets (small, reddish or purple) visible at shoot tips after pollination
Cone development (year 1-2) BBCH 71	Jun 1-Aug 31	Cones elongate. Five-needle fascicles characteristic. Cones similar to albicaulis but DO open. Mature over second year
Cone maturity and seed shed BBCH 85	Sep 1-Nov 30	Woody cones open; scales spread to release winged seeds

Cultivars (2)

'Vanderwolfs Pyramid'

Common name: Vanderwolf's Pyramid Limber Pine; Mature height: 30 ft

Hardy to USDA Zone 4

'Vanderwolf'

Data Maturity

Structured Multiple sources. Expert review underway.