Eastern White Pine

Pinus strobus

Native to:
Canada, Prince Edward I., United States

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Taxonomy

Division:
Coniferophyta | - Conifers
Family:
Pinaceae
Genus:
Pinus
Species:
Pinus strobus
USDA Symbol:
PIST

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Tree
Height:
5000 cm
Light Requirements:
Full Sun,Part Shade,Shade
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun

Wildlife Benefits

Caterpillars:
★★★★★ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

Allen's Aphelia (Aphelia alleniana), Anacamptodes vellivolata, Aplectoides condita, Bagworm moth (Thyridopteryx ephemeraeformis), Black zigzag (Panthea acronyctoides), brown pine looper (Caripeta angustiorata), Caripeta latiorata, Chain-lined geometer moth (Cingilia catenaria), contracted spanworm (Thera contractata), Dichomeris picrocarpa, Dichomeris setosella, Dioryctria auranticella, Doris' pinemoth (Coloradia doris), Eastern Panthea (Panthea furcilla), eastern pine shoot borer (Eucosma gloriola), Eucosma tocullionana, Eupithecia palpata, European pine shoot moth (Rhyacionia buoliana), False hemlock looper (Nepytia canosaria), false sphinx (Lapara bombycoides), fir coneworm (Dioryctria abietivorella), gray spruce looper (Caripeta divisata), Gypsy moth (Lymantria dispar), Imperial Moth (Eacles imperialis), jack pine budworm (Choristoneura pinus), Larch Pug (Eupithecia lariciata), Larch Tolype (Tolype laricis), Large Fruit-tree Tortrix (Archips oporana), Lusk's pinemoth (Coloradia luski), Major Sallow (Feralia major), Marmara fasciella, Morrison's pero (Pero morrisonaria), Mournful Thorn (Lambdina fiscellaria), Nameless Pinion (Lithophane innominata), Northern Pine Carpet Moth (Caripeta piniata), Northern Pine Tussock Moth (Dasychira plagiata), Northern Variable Dart (Xestia badicollis), Obliquebanded leafroller (Choristoneura rosaceana), Ocnerostoma strobivorum, Oslar's eacles (Eacles oslari), Pandora moth (Coloradia pandora), Panthea pallescens, pine devil moth (Citheronia sepulcralis), pine false looper (Zale duplicata), Pine Hypagyrtis Moth (Hypagyrtis piniata), pine powder moth (Eufidonia convergaria), pine shoot moth (Ocnerostoma piniariella), pine tube moth (Argyrotaenia pinatubana), Pitch mass borer (Synanthedon pini), Porcelain Gray (Protoboarmia porcelaria), powdered eufidonia (Eufidonia notataria), Rusty Tussock Moth (Orgyia antiqua), Semiothisa bicolorata, Semiothisa bisignata, Semiothisa granitata, Semiothisa minorata, Semiothisa pinistrobata, sparganothis fruitworm moth (Sparganothis sulfureana), three-streaked sparganothis moth (Sparganothis tristriata), Variable Climbing Cutworm (Xestia elimata), variegated midget (Elaphria versicolor), Velda pinemoth (Coloradia velda), White-marked Tussock Moth (Orgyia leucostigma), Zale helata, Zimmerman's coneworm (Dioryctria zimmermani), Eastern Tailed-Blue (Incisalia niphon), Entomologist's hairstreak (Incisalia eryphon)

Reported Fauna Sightings

Moths:Argyresthia calliphanes, false sphinx (Lapara bombycoides), Gluphisia septentrionis, Gypsy moth (Lymantria dispar), Hypena edictalis, Macaria pustularia, Marmara fasciella, Olethreutes nigranum, pine tube moth (Argyrotaenia pinatubana), spiny looper moth (Phigalia titea), white-striped black (Trichodezia albovittata), Zanclognatha laevigata

Garden & Ecology Notes

Wildlife Value:
birds, small mammals, squirrels
Fragrant:
Yes
Fire Notes:
Thin bark makes it highly susceptible to fire damage; typically killed by moderate to severe fires.

Soil Requirements

Soil Type:
well-drained, sandy or loamy soil
pH:
4.5 - 6.5 (acidic to slightly acidic)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers nutrient-poor soils; avoid waterlogged conditions

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–60 days
Notes:
Seeds germinate best after cold-moist stratification; light is not required but consistent moisture is important.

The above propagation data sourced from Claude AI

Pre-treatment: Seeds are cold stratified for 60-98 days. Some protocols suggest soaking seeds in water for 24 hours before stratification. Seeds can be treated with Thiram fungicide after drying.

Establishment: Seeds can be obtained from fallen cones or purchased commercially. The protocols vary slightly in stratification period and sowing techniques. The species is found throughout northeastern North America, and grows in a variety of sites along the full moisture gradient from wet bogs and moist stream bottoms to xeric sand plains and rocky ridges.

Source: npn.rngr.net

ORGHPS Germination Guide: Sow at 4°C for 3 months, then place @ 20°C for 3 months. * sow seeds in individual pots

Source: Ontario Rock Garden & Hardy Plant Society