Select the branches before you start trimming so that you do not over prune the tree accidentally. Then make your pruning cuts just above the needle whorls. Hemlock trees will grow new branches from the needle whorls, and pruning just above them will ensure that the new branches come in properly.

How do you prune overgrown hemlock?

Select the branches before you start trimming so that you do not over prune the tree accidentally. Then make your pruning cuts just above the needle whorls. Hemlock trees will grow new branches from the needle whorls, and pruning just above them will ensure that the new branches come in properly.

How much can you prune a hemlock tree?

Generally, it’s just the reverse. If they’re now six feet wide, he should be able to prune a foot or so off of each side every Spring without any harm.

When should I prune my hemlock trees?

It is best to trim and prune hemlocks in early spring or late winter before the active growth period begins, trimming only what is necessary. Hemlocks will sprout vigorous new growth once trimmed and pruning during the active growth period may prevent the tree from going dormant when it needs to.

How do you care for hemlock?

They need acidic soils that stay moist, but not wet, and frequent waterings. Like willows, hemlocks are riverbank trees, so if your site is elevated and dry, you may need to add a thick ring of mulch over your tree’s root zone and consider installing a drip irrigation system to keep your tree looking its best.

How do I make my hemlock green?

Fertilizing – Feed young Hemlocks once a year in the fall. After they have been planted a year, sprinkle an all-purpose slow acting granular fertilizer on the soil under the tree out to 1 or 1½ feet beyond the tips of the branches (the drip line). Do not allow the fertilizer to touch the tree trunk.

Can you top a hemlock?

I have been told that topping Hemlocks will eventually kill them and we should have them taken down. They are quite big in spite of topping and provide a lovely privacy screen.

Why are my hemlock trees dying?

The most common problem with hemlocks is infestation by an insect called hemlock woolly adelgid (Adelges tsugae). If you see deposits of white, cotton-like masses on between the needles, then this is most likely the problem. This disease is hard to cure but it can be controlled, particularly if it is caught early.

Can you trim a Canadian hemlock?

A: Hemlocks tolerate trimming and shearing better than most evergreens. The ideal time is the end of winter, just before new growth begins. You could trim in winter, but the more you cut, the barer it’ll look for a longer period of time until new growth resumes again in spring to fill in.

What is a needle whorl on a hemlock?

The needles of eastern hemlock (above) grow in a flat plane and needle edges have tiny teeth. The needles of Carolina hemlock are whorled around the branch and needle edges are smooth. … White pines (right) have whorled branches, whereas hemlocks (far right) have alternate branches.

Article first time published on

What is a hemlock hedge?

As an evergreen hedge. … Once established, the hemlock hedge withstands drought, subzero weather and heavy snow. Remarkably free from diseases, it needs no fertilizer and is an effective windbreak. Its density discourages intruders. Hemlocks grow best in full sun.

What can I plant instead of hemlock?

  • Chamaecyparis. Chamaecyparis or False Cypress is a large group of evergreens containing many varieties that we love and rely on in our own landscapes. …
  • Spruce. As far as the replacements for Hemlocks, Spruces are one of the best. …
  • Arborvitae. …
  • Eastern Red Cedar.

How far apart should hemlocks be planted?

Spacing and Pruning To achieve a suitably dense hedge, Canadian hemlocks must be spaced roughly 5 to 10 feet apart. They put on over a foot of growth each year, so they will quickly fill in and take on an established look.

How do you grow a hemlock hedge?

Location – Hemlocks prefer partial sun, but tolerate full sun to full shade. Plant trees at 4 feet apart or in a hedge Planting – The best time to plant hemlocks is in early spring. Hemlocks can be sensitive if planted in the fall and extra care should be taken to water, fertilize, and protect from winter salt spray.

How do you root a hemlock cutting?

To encourage successful rooting, dip the base of the cutting in a rooting hormone powder suitable for woody shrubs and trees. Make sure the cut is completely covered in the powder before planting it in the pot. Place the cutting in a pot filled with well-drained potting mix.

How long does a hemlock tree live?

Eastern hemlock (Tsuga canadensis), also called Canada hemlock or hemlock spruce, is a slow-growing long-lived tree which unlike many trees grows well in shade. It may take 250 to 300 years to reach maturity and may live for 800 years or more.

Is a hemlock a good tree?

Canadian hemlocks in the landscape have flat sprays of lacy evergreen foliage and graceful, pyramid shapes. Their elegance makes them excellent choices for specimen trees. However, the trees are very tolerant of shearing. This means that you can also keep them short or use them for privacy screens.

Is there a dwarf hemlock?

The “Gracilis” hemlock (Tsuga canadensis “Gracilis”) grows in zones 4 through 8 and is a dwarf cultivar of the Canadian hemlock. This slow-growing evergreen will reach heights of up to 6 feet tall with an 8-foot-wide span and thrives in areas with partial shade to full sun.

How tall do hemlock trees grow?

The eastern hemlock (Tsuga canadensis) of North America, also called Canadian hemlock and hemlock spruce, usually is 18 to 30 metres (about 60 to 100 feet) tall and has a trunk 1.2 metres (4 feet) in diameter.

Can you prune Moon Frost Canadian hemlock?

With a little pruning, can look like a small weeping tree. … Prune in late winter or early spring, before new growth begins, or after new foliage has developed (about mid-June).

Why do hemlock needles turn yellow?

One of the most common reasons hemlock needles turn yellow is overwatering. When the roots of the tree are flooded or waterlogged they will become damaged and will eventually die due to a lack of oxygen. … The rate of the damage depends on the severity of the flooding as well as the age of the plant.

What is the best fertilizer for hemlock trees?

A: Hemlocks do best with slow-release fertilizers like cottonseed meal or composted chicken manure. For cottonseed meal (6-2-1 analysis), spread eight pounds per 100 sq. ft. over the root zone of the trees.

Do hemlocks need fertilizer?

Fertilizer. This tree needs a well-balanced fertilizer (10-10-10) about once a year. Do not add fertilizer to your hemlock during transplanting because it can burn the root system and it could lead to the death of the tree.

How big do Canadian hemlocks get?

The Canadian hemlock grows to a height of 40–70′ and a spread of 25–35′ at maturity.

How do you transplant a hemlock tree?

Dig a 4-foot tall tree to a depth of 1 foot. Lift the hemlock tree from the hole by lifting the root ball (not the trunk) to prevent damage. Set the tree on a plastic or nylon tarp. Wrap the tarp around the root ball and move the hemlock tree to the new location.

Can I save my Hemlock?

The most common method of combatting HWA involves chemical treatments that aid in stopping HWAs from harming the hemlocks. Applied manually, tree-by-tree, treatment periods can range from five years up to eight years or more.

How do you treat hemlock trees for hemlock woolly adelgid?

Homeowners and private landowners have two treatment options: 1) spray foliage with insecticidal soap or horticultural oil at the proper times during the HWA life cycle, or 2) use a systemic insecticide that moves with the tree sap and is consumed by the adelgids as they feed.

Why is my Hemlock losing needles?

Needle Blight, Rusts and Fungi If a tree is infected several years in a row, it may suffer from extensive needle shedding. This fungus is most prevalent in areas of high humidity and can be recognized by its single-needle browning habit. Multiple rusts may affect the needles of Canadian hemlock.

Why are my hemlocks turning brown?

Hemlock (Tsuga) can exhibit browning foliage if subjected to drought, planted in poorly draining soils, or when insects or diseases are present. … If the foliage doesn’t contain any insect or disease, the problem is most likely environmental – perhaps drought stress or standing water.

Are hemlocks good for privacy?

Canadian Hemlocks are perfect for adding privacy to your yard. They tolerate heavy pruning and can be sheared to the size and shape you desire. Plant about 10 feet apart for a dense hedge. Stagger for a quicker privacy solution.

Do hemlock trees have deep roots?

Though the various species of hemlock have a number of different root system types, the two most common are taproot and fibrous roots. … The taproot digs deep and is thicker than the small roots surrounding it. These small roots branch laterally in the soil.