Pollination Information for Degroot's Spire Arborvitae (Thuja occidentalis 'Degroot's Spire')

Degroot's Spire Arborvitae is a variety of Thuja occidentalis, which is a coniferous tree that does not produce flowers. Instead, it has male and female cones that produce pollen and seeds, respectively. The tree is pollinated by wind, and the pollen is dispersed over long distances before landing in the female cones.

It is not necessary to have multiple Degroot's Spire Arborvitae trees for pollination, as the male and female cones are located on the same tree. However, having multiple trees can increase the genetic diversity of the seeds produced.

When planting Degroot's Spire Arborvitae, it is important to ensure that the tree has enough space to grow. It prefers full sun to partial shade and well-draining soil. The tree can be propagated through cuttings or by seed, although seed propagation can take several years before the tree reaches maturity.

Degroot's Spire Arborvitae - FAQ

What is Degroot's Spire Arborvitae?

Degroot's Spire Arborvitae is a cultivar of Thuja occidentalis, commonly known as Northern White Cedar, American Arborvitae or Eastern Arborvitae. It is a narrow, columnar evergreen tree that can grow up to 20 feet tall and 5 feet wide when mature.

What are the characteristics of Degroot's Spire Arborvitae?

Degroot's Spire Arborvitae has dark green foliage that retains its color through winter. It has a narrow, columnar growth habit, making it an ideal tree for small gardens or as a screening plant. It is also tolerant of urban pollution and resistant to deer browsing.

How do you care for Degroot's Spire Arborvitae?

Degroot's Spire Arborvitae prefers well-drained soils and full sun to partial shade. It is best to avoid planting it in areas with hot and dry summers. Water it regularly during the first growing season to establish a deep, extensive root system. Fertilize it once a year in the spring with a slow-release fertilizer. Prune it in late winter or early spring to maintain its narrow, columnar shape.

When does Degroot's Spire Arborvitae bloom?

Degroot's Spire Arborvitae is a non-flowering plant.

How fast does Degroot's Spire Arborvitae grow?

Degroot's Spire Arborvitae is a slow-growing tree, averaging 6-8 inches of growth per year.

Is Degroot's Spire Arborvitae invasive?

Degroot's Spire Arborvitae is not considered an invasive plant species, and is not known to cause any ecological problems.

Can Degroot's Spire Arborvitae be grown in containers?

Degroot's Spire Arborvitae can be grown in containers, but it will require more care and attention to ensure it does not dry out or become root-bound. When planting in a container, use a well-draining potting mix and water regularly.

What pests and diseases affect Degroot's Spire Arborvitae?

Degroot's Spire Arborvitae is susceptible to blight, which can cause foliage to turn brown and die. Spider mites, scale insects, and bagworms can also affect the tree. To control these pests and diseases, use appropriate fungicides and insecticides.

Planting Degroot's Spire Arborvitae

When planting Degroot's Spire Arborvitae, choose a location that receives full to partial sunlight and has well-drained soil. The ideal planting time is in early spring or early fall.

Dig a hole that is two to three times wider than the root ball and slightly shallower than the depth of the root ball. Place the plant in the hole and backfill with soil, making sure to gently tamp down the soil as you go to avoid any air pockets. Water thoroughly after planting.

Caring for Degroot's Spire Arborvitae

Water: Water your Degroot's Spire Arborvitae deeply once a week in the absence of rainfall, making sure that the soil has time to dry out between waterings. Avoid overwatering as this can cause root rot.

Fertilizer: Apply a balanced fertilizer in early spring, just before new growth begins. Avoid fertilizing in late summer or fall, as this can encourage new growth that may not have enough time to harden off before winter.

Pruning: Prune your Degroot's Spire Arborvitae in late winter or early spring to control its size and shape. Avoid heavy pruning as this can cause damage and stunted growth.

Pests and Diseases: Degroot's Spire Arborvitae is generally pest and disease resistant, but can be susceptible to spider mites and bagworms. Regular inspections and early treatment can prevent infestations from becoming severe.