Species eastern white pine
Dwarf tree with dense, round clusters of short, blue-green needles

eastern white pine

Pinus strobus 'Sea Urchin'

Eastern white pine (Pinus strobus 'Sea Urchin') is a variety of white pine with an attractive, bushy form. It features soft green needles and is considered hardy in USDA zones 3 to 8. The attractive, rounded shape of the 'Sea Urchin' lends itself well to use in groupings and as a hedge. It also makes a great specimen plant or container accent. Growing slowly to a height of 40 feet with an equal width spread, it benefits from being sheared annually to create denser foliage. Easy to maintain, with minimal pruning, this conifer needs full sun and well-drained soil for best growth.

Cycle:

Perennial

Watering:

Average

Propagation:

Seed Propagation

Hardiness Zone:

3 - 8

Flowers:

Non-flowering Flowers In Spring

Sun:

Full sun

Soil:

Sandy Loamy Rocky

Cones:

Yes

Leaf:

Yes

Leaf Color:

green

Growth Rate:

High

Maintenance:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

watering

Eastern white pine should be watered thoroughly once a week in its early stages and twice a week once it is established. During hot, dry summers, Eastern white pine trees may need supplemental watering more frequently. Found in both landscape and container settings, Eastern white pine should receive about 1 inch of water each time it is watered. Soaker hoses, lawn irrigation systems, or buckets of water surveyed over the tree's root zone are all acceptable ways to apply water. Avoid the temptation to water too often, which can actually harm the plant. It is also important to water deeply.

sunlight

Eastern white pine (Pinus strobus 'Sea Urchin') plants need about 6 to 8 hours of direct sunlight each day for proper growth and maximum health. Sunlight should be spread out over the course of the day, with most of the light in the morning hours between 8:00 a.m. and 11:00 a.m., when the sun is strongest. During the summer months, midday sun can be beneficial for this species, but during winter and autumn, it is recommended that it receives most of its light early in the day.

pruning

Eastern white pine should be pruned during late winter or early spring. Pruning should generally consist of light maintenance that includes removing dead, dying or diseased branches, and thinning the crown of the tree. This species tolerates heavy pruning, so if desired, larger branches can be removed to create a desirable shape or to allow more light into your landscape. It is important to leave some of the larger branches intact in order to keep the tree healthy and structurally sound. Avoid pruning later in the season since the sap flow has slowed and the wounds tend to heal more slowly.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Eastern white pine typically starts flowering in April.

Hardiness Map