Introduction
Mistletoe is an unusual evergreen plant that grows on trees instead of in normal garden soil. It makes some of its own food through photosynthesis. At the same time, it takes water and nutrients from its host tree.
Many gardeners notice mistletoe as a green, round clump high in a tree. White berries can appear on mature female plants. Birds also help spread its sticky seeds from one tree to another.
Mistletoe is interesting, but it needs careful management. Different mistletoe species also grow in different parts of the United States. So, gardeners should not treat every mistletoe plant as the same species.
This guide explains how mistletoe grows, where it lives, how to grow it, how it affects trees, and how to handle it safely. Pasted text
What Is Mistletoe?
Mistletoe is a group of evergreen plants that grow on woody plants. Many species are hemiparasitic, which means they can make food through photosynthesis but still take water and nutrients from a host.
The word mistletoe refers to many related plants. For example, European mistletoe is Viscum album. American mistletoes belong mainly to the genus Phoradendron. RHS
Mistletoe does not behave like most garden plants. You cannot simply put a mistletoe seed in a pot and expect it to grow.
Instead, the seed must reach a suitable host plant. The young mistletoe then grows into the host tissue.
Over time, the plant develops into a green clump. It stays attached to the tree while taking water and nutrients from it.
This makes mistletoe both a plant and a tree parasite. However, it also makes its own food from sunlight.
What Does Mistletoe Look Like?
Mistletoe is easy to spot when it grows high in a bare tree.
It often forms a rounded green mass among the branches. Its leaves stay green through much of the year.
Common features include:
- Green leaves
- Branching stems
- Round growth
- Small flowers
- White or colored berries
- Growth high on tree branches
European mistletoe has yellow-green leaves and white berries. Its berries appear on female plants after flowering. RHS
American mistletoes can look different because several species occur across the United States.
The plant may be harder to see when a host tree has full leaves. During winter, however, evergreen mistletoe can stand out against bare branches.
Where Does Mistletoe Grow?
Mistletoe grows on trees and other woody plants. Different species prefer different hosts and regions.
In the United States, several mistletoe species occur naturally. American mistletoe is different from the European species often associated with gardens and holiday displays. Poison Control
Mistletoe may be found in:
- Woodlands
- Gardens
- Orchards
- Parks
- Forests
- Mature trees
Its range depends on the species.
European mistletoe (Viscum album) is native to parts of Europe, Asia, and North Africa. It is not the same plant as the American mistletoe found in many parts of the United States. RHS
For US gardeners, identifying the local species is important. Host trees, growth habits, and safety concerns can vary.
What Trees Does Mistletoe Grow On?
Mistletoe grows on many woody host plants. But not every mistletoe species can use every tree.
European mistletoe commonly grows on trees such as:
- Apple
- Crabapple
- Lime
- Hawthorn
- Poplar
It can also grow on many other suitable trees. RHS
American mistletoe species have their own host preferences. Some grow on hardwood trees, while dwarf mistletoes are important parasites of certain conifers.
This is why gardeners should identify the mistletoe species before trying to grow or remove it.
A healthy, established tree is also a better host than a young or weak tree. Do not add mistletoe to a tree that is already stressed.
How Does Mistletoe Grow?
Mistletoe has a clever way of spreading.
Birds play an important role in this process. They eat the berries and help move the seeds to new branches. The sticky seeds can then attach to suitable tree branches. RHS
The basic process looks like this:
- A bird eats a mistletoe berry.
- The bird moves to another tree.
- A seed reaches a suitable branch.
- The sticky seed attaches to the bark.
- The seed begins to germinate.
- The young plant enters the host tissue.
- A connection develops with the host.
- The mistletoe slowly grows into a visible plant.
Mistletoe is slow to develop.
For European mistletoe, early growth can take months. Leaves may take several years to appear, and fruiting can take even longer. RHS guidance notes that plants may take up to seven years before producing berries. RHS
Can You Grow Mistletoe at Home?
Yes, mistletoe can be grown on a suitable host tree. But it is very different from growing tomatoes, herbs, or flowers.
Mistletoe needs a living host. It does not grow as a normal soil-grown garden plant.
Before growing it, consider these points:
- Choose the correct mistletoe species.
- Use a suitable host tree.
- Choose a healthy, established tree.
- Expect slow growth.
- Give the plant enough light.
- Monitor the host tree.
- Avoid excessive spread.
Growing mistletoe requires patience.
It also requires responsibility. A large mistletoe infestation can weaken a tree, especially when the host is already stressed. RHS
How to Grow Mistletoe From Berries
Growing mistletoe from berries is possible when you have the right species and host tree.
Step 1: Choose Ripe Berries
Start with mature, fresh berries.
For European mistletoe, RHS guidance recommends soft, ripe berries. Hard or immature berries are less useful for propagation. RHS
Do not assume old decorative berries will work well.
Step 2: Select a Suitable Host
Choose a healthy, established tree.
For European mistletoe, apple and crabapple are useful host choices. Lime, hawthorn, and poplar can also support it. RHS
Host preferences vary by species.
Step 3: Remove the Seed
Gently squeeze the berry to release the seed.
The seed is surrounded by a sticky substance. This helps it stay attached to a branch.
Handle berries carefully because mistletoe can be harmful if eaten.
Step 4: Choose a Young Branch
Choose a healthy branch with smooth bark.
RHS guidance recommends a branch around pencil thickness or similar. Avoid damaged, thick, or rough branches. RHS
Step 5: Place the Seed
Wipe the sticky seed directly onto the branch.
Do not cut a flap into the bark.
RHS guidance specifically recommends placing the seed on the branch without cutting the bark. RHS
Step 6: Choose a Bright Location
Mistletoe seeds are green and can photosynthesize.
Place them where they receive good light. Avoid deeply shaded branches.
Step 7: Mark the Location
Label the branch or mark the area.
This makes it easier to check for growth later.
Step 8: Be Patient
Do not expect quick results.
Germination may take months. Young plants can take years to develop visible leaves.
For this reason, growing mistletoe is a long-term project.
How to Care for Mistletoe
Mistletoe does not need the same care as a normal garden plant.
The health of its host tree is the most important concern.
Focus on:
- Tree health
- Good light
- Healthy branches
- Water availability
- Mistletoe growth
- Spread control
- Regular inspection
You do not normally water mistletoe directly. The host tree supplies much of the water and nutrients that the plant needs.
Instead, care for the tree that supports it.
Avoid creating stress for the host. A weak or damaged tree may have less ability to tolerate a mistletoe infestation.
Is Mistletoe Harmful to Trees?
Mistletoe can harm trees, but the effect depends on the species, amount, and health of the host.
A small amount may cause little harm to a healthy tree. Large infestations can take more water and nutrients and may reduce tree vigor. RHS
Heavily infected branches can also become weak.
The US Forest Service notes that branches with large or numerous mistletoe infections may break. Heavy infections can also affect tree growth and, in some cases, crop production. U.S. Forest Service
This does not mean every mistletoe plant will kill its host.
The right approach is to watch the tree and manage serious infestations when needed.
How to Remove Mistletoe From Trees
Removing mistletoe can be difficult because the visible green plant is only part of the problem.
Some mistletoe structures remain inside the host branch. Cutting away only the visible growth may therefore allow it to return.
For manageable branches:
- Inspect the infected area.
- Find the main attachment point.
- Check the branch for damage.
- Prune the infected branch when practical.
- Avoid damaging the main trunk.
- Watch the area for regrowth.
Large or high branches are different.
Do not climb an unsafe tree to remove mistletoe. For tall trees, large branches, or branches near buildings and power lines, hire a qualified tree professional.
This is especially important because infected branches can become weak and break. U.S. Forest Service
Is Mistletoe Good for Wildlife?
Mistletoe has an important role in some ecosystems.
Birds eat its berries and help spread its seeds. Birds such as thrushes, robins, bluebirds, waxwings, and other species may use mistletoe berries as food. U.S. Forest Service
Its ecological role goes beyond berries.
Mistletoe can provide food and habitat for wildlife. Its presence can also affect how birds move through an ecosystem.
The US Forest Service describes mistletoes as important ecological plants with complex relationships involving trees and birds. USFS Research & Development
However, mistletoe is not always beneficial.
Heavy infestations can damage host trees. So, its value depends on the species, location, and level of growth.
Is Mistletoe Poisonous?
Mistletoe should be treated as a potentially harmful plant.
Different species have different levels of toxicity. European mistletoe (Viscum album) and American mistletoe (Phoradendron species) should not be treated as identical. Poison Control
Children and pets should not eat mistletoe berries, leaves, or other plant parts.
The ASPCA lists American mistletoe as toxic to dogs, cats, and horses. Reported signs include vomiting and diarrhea, with more serious effects possible. ASPCA
Poison Control also advises keeping mistletoe away from children and pets. If someone eats the plant, contact a poison center or medical professional for advice. Poison Control
For pets, contact a veterinarian or an animal poison service after possible ingestion.
Never use mistletoe as food or add it to meals.
Common Mistakes When Growing Mistletoe
Growing mistletoe is different from growing most garden plants.
Avoid these common mistakes:
Planting It in Soil
Mistletoe needs a living host. Planting its seed in a pot of soil will not provide the right growing conditions.
Choosing the Wrong Host
Different species prefer different host trees.
Research the species before propagation.
Using Immature Berries
Fresh, mature berries have a better chance of producing viable seeds.
Cutting Into the Bark
Do not cut a flap into the tree.
The seed should be placed directly on a suitable branch. RHS
Expecting Fast Growth
Mistletoe develops slowly.
It may take years before a young plant becomes easy to see.
Using an Unhealthy Tree
A stressed tree may have less ability to tolerate mistletoe.
Start with a healthy host if propagation is appropriate.
Ignoring Tree Health
Do not focus only on the mistletoe.
Watch the host tree for weak branches, poor growth, or signs of stress.
Allowing Excessive Spread
A few plants can become a larger problem over time.
Monitor the tree and manage heavy growth when needed.
Handling Berries Carelessly
Keep berries and plant pieces away from children and pets.
Why Mistletoe Is Different From Most Garden Plants
Mistletoe is unusual because it combines two ways of getting energy and resources.
First, it uses sunlight to make food through photosynthesis.
Second, it takes water and nutrients from a host tree.
That makes it a hemiparasitic plant.
Unlike normal garden plants, it does not need to grow its own root system in garden soil.
Its life is tied to the tree that supports it.
This also means that mistletoe care is closely linked to tree care. The host’s health, branch condition, light, and available resources all matter.
Frequently Asked Questions About Mistletoe
What is mistletoe?
Mistletoe is an evergreen plant that grows on trees and other woody plants. It is hemiparasitic, so it makes food through photosynthesis but also takes water and nutrients from its host. Different mistletoe species occur in different parts of the world. RHS
Is mistletoe a parasite?
Yes. Mistletoe is a hemiparasitic plant. It makes some of its own food but takes water and nutrients from its host tree. This makes it different from plants that grow fully on their own in garden soil.
What trees does mistletoe grow on?
The answer depends on the species. European mistletoe commonly grows on apple, crabapple, lime, hawthorn, and poplar. Other mistletoe species have different host preferences. RHS
Can you grow mistletoe in a garden?
Yes, but you need a suitable living host tree. Mistletoe is not a normal soil-grown plant. It also grows slowly, so gardeners need patience and should monitor the host tree.
Can mistletoe grow in soil?
Mistletoe does not grow like a normal soil plant. Its seed needs to establish on a suitable host branch. The young plant then develops a connection with the host tree.
How long does mistletoe take to grow?
Mistletoe grows slowly. European mistletoe can take months to germinate, several years to develop visible leaves, and up to about seven years to produce berries. Growth times vary by species and conditions. RHS
Is mistletoe harmful to trees?
Small amounts may cause little harm to healthy trees. Heavy infestations can reduce tree vigor and weaken branches. The risk depends on the mistletoe species, host tree, and level of infestation. RHS
How does mistletoe spread?
Birds are major seed dispersers. They eat the berries or move sticky seeds between branches. The seeds then attach to suitable host branches and may begin growing there. RHS
Is mistletoe poisonous?
Some mistletoe species contain toxic compounds and can cause illness if eaten. American and European mistletoes also differ in toxicity. Keep mistletoe away from children and pets, and seek expert help after accidental ingestion. Poison Control
Can birds eat mistletoe berries?
Yes. Many birds eat mistletoe berries. Birds also help spread mistletoe seeds to new trees. Species that use mistletoe can vary by region. RHS
How do you remove mistletoe from a tree?
For manageable infestations, pruning infected branches can help. Removing only the visible growth may not fully solve the problem because mistletoe can remain inside the host branch. Use a tree professional for large or high branches.
Final Thoughts
Mistletoe is far more than a familiar evergreen plant. It has a unique life cycle that depends on a host tree, birds, sunlight, and time.
It can provide food and habitat for wildlife, but heavy growth can also weaken trees. That makes careful monitoring important.
If you want to grow mistletoe, start by identifying the correct species and choosing a healthy host. Use mature berries, place the seeds correctly, and expect slow growth.
Safety matters too. Keep mistletoe away from children and pets, and never assume that all mistletoe species have the same toxicity.
With the right knowledge, gardeners can better understand this unusual tree-dwelling plant and its place in the garden ecosystem.
