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Liriodendron tulipifera (Tulip Tree)

Tulip Tree, Tuliptree, Canary Whitewood, Canoewood, Lyre Tree, North American Whitewood, Saddle Tree, Tulip Poplar, Western Poplar, Whitewood, Yellow Poplar, Tuliptree Magnolia

AGM Award
Liriodendron tulipifera, Tulip Tree, Canary Whitewood, Canoewood, Lyre Tree, North American Whitewood, Saddle Tree, Tulip Poplar, Western Poplar, Whitewood, Yellow Poplar
Liriodendron tulipifera, Tulip Tree, Canary Whitewood, Canoewood, Lyre Tree, North American Whitewood, Saddle Tree, Tulip Poplar, Western Poplar, Whitewood, Yellow Poplar
Liriodendron tulipifera, Tulip Tree, Canary Whitewood, Canoewood, Lyre Tree, North American Whitewood, Saddle Tree, Tulip Poplar, Western Poplar, Whitewood, Yellow Poplar

Liriodendron tulipifera, commonly known as the Tulip Tree or Tulip Poplar, is a striking deciduous tree renowned for its unique tulip-shaped flowers and leaves. Its grandeur and ornamental qualities make it a staple in landscapes.

Tulip Tree: An In-depth Look

Native: This species is native to eastern North America, from southern Ontario to central Florida and as far west as the Mississippi River. Liriodendron tulipifera is one of two species within the genus Liriodendron, the other being Liriodendron chinense. Both species belong to the Magnolia family, showcasing the unique characteristics and beauty of this family of plants.

Plant Type and Habit: It’s a fast-growing, deciduous tree with a pyramidal habit when young, becoming oval-rounded with age, usually growing as a single, dominant leader.

Size: This is a substantial tree, often attaining heights of 60 to 80 feet (18 to 24 meters) with a spread of 30 to 40 feet (9 to 12 meters). This is one of the largest native trees of eastern North America.

Flowers: Its show-stopping flowers, about 3 inches across (7 cm), are tulip-like, pale green or golden yellow, with an orange band at the base of each petal, giving it its name. Handsome at close range, they are borne so high on the tree that they are often missed. They give way to cone-like fruits that provide winter interest.

Bloom Time: The Tulip Tree blooms from late spring to early summer, offering a short but spectacular display.

Foliage: The leaves, up to 8 inches long (20 cm), have a unique, lobed shape that can look somewhat like a four-pointed star or a lyre. They are glossy bright green in the summer and turn a vibrant yellow in the fall, providing both shade and seasonal color.

Hardiness: It’s generally hardy in USDA zones 4-9, though it prefers a moderate climate and struggles with extreme cold or heat.

Award: Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society.

Uses: Due to its majestic height and distinctive flowers, it’s widely used as a decorative or shade tree in parks, large gardens, and public spaces.

Wildlife: The tree attracts bees, butterflies, and hummingbirds during its bloom period, and its seeds are a food source for squirrels and birds. This is also a favorite nesting tree for birds. The tulip tree is a significant host plant for several butterfly species, notably the Eastern Tiger Swallowtail (Papilio glaucus).

Deer and Rabbits: Generally resistant to deer and rabbits, making it a reliable choice in areas where these animals are common.

Toxicity: The Tulip Tree is generally considered non-toxic to humans and animals.

Drought: It does not tolerate drought and thrives best in consistently moist, well-drained soils.

Invasiveness: Generally not considered invasive, but it’s essential to check local guidelines as conditions can vary.

Benefits: Beyond its ornamental value, the Tulip Tree also offers environmental benefits like carbon sequestration and providing habitats for various wildlife. Its wood is also commercially valuable.

Fun Facts: This is the state tree of Kentucky, Tennessee, and Indiana. Native Americans made dugout canoes from the straight, column-like trunks.

Liriodendron tulipifera, Tulip Tree, Canary Whitewood, Canoewood, Lyre Tree, North American Whitewood, Saddle Tree, Tulip Poplar, Western Poplar, Whitewood, Yellow Poplar

How to Grow and Care for a Tulip Tree

Growing and caring for Liriodendron tulipifera, commonly known as the tulip tree or tulip poplar, is generally straightforward, but there are some key considerations to keep in mind:

Soil and Site Selection:

Choose a sunny location with room for the tree to grow, as mature specimens can reach heights of 60-80 feet (18-24 meters) or more. Tulip trees prefer organically rich, moist, slightly acidic, well-drained soil.

Planting:

Spring and fall are the best times to plant. Dig a hole about 2-3 times as wide as the root ball but no deeper. Place the tree in the hole, ensuring it is at the same soil level as in the container. Fill the hole with soil and water thoroughly.

Watering:

Newly planted tulip trees require regular watering to help establish their root systems. The soil should be kept consistently moist but not waterlogged. The tree rarely does well in very wet or very dry situations.

Fertilization:

An annual application of balanced fertilizer in the spring can help young trees grow strong and healthy. Established trees usually do not require much fertilization.

Pruning:

Young tulip trees may need some formative pruning to develop a strong structure. Avoid pruning mature trees unless removing dead or diseased wood, as this can make the tree more susceptible to disease.

Liriodendron tulipifera, Tulip Tree, Canary Whitewood, Canoewood, Lyre Tree, North American Whitewood, Saddle Tree, Tulip Poplar, Western Poplar, Whitewood, Yellow Poplar

How to Propagate a Tulip Tree

Propagating a tulip tree (Liriodendron tulipifera) can be done through seeds or cuttings. Below are some guidelines for each approach:

From Seeds:

  • Collect Seeds: Collect mature seeds from the tree in late summer or early fall. The seeds are inside cone-like fruits.
  • Stratification: Tulip tree seeds require cold stratification for successful germination. Place seeds in a mixture of moist peat moss or sand inside a plastic bag and store in a refrigerator for 60-90 days.
  • Planting: After stratification, plant the seeds in pots filled with well-draining soil. Lightly cover the seeds with soil.
  • Germination: Place pots in a warm location with indirect light. Keep the soil moist but not waterlogged. Germination should occur in a few weeks.
  • Transplanting: Once seedlings are a few inches tall and have at least two sets of true leaves, they can be transplanted to their final location.

From Cuttings:

  • Timing: Take softwood cuttings in late spring or early summer when the new growth is flexible.
  • Cutting: Cut a 6-8 inch (15-20 cm) section of a healthy branch, ideally with several sets of leaves. Cut just below a leaf node.
  • Preparation: Remove leaves from the lower half of the cutting, and dip the cut end in the rooting hormone.
  • Planting: Stick the cut end into a pot filled with a mixture of sand and peat moss. Cover the pot with a plastic bag to maintain humidity.
  • Rooting: Place the pot in a warm location with indirect light. Keep the soil moist. Roots should begin to form in 4-6 weeks.

Common Problems with Tulip Trees

Pests

  • Aphids: These small insects can suck sap from young leaves, causing leaf curl and reduced vitality.
  • Scale: These flat, oval-shaped insects can also feed on tree sap, causing a decline in tree health.
  • Tent Caterpillars: These pests can devour leaves, although healthy trees usually recover from their feeding.

Diseases

  • Verticillium Wilt: A soil-borne fungus that can cause wilting and death of branches.
  • Cankers: These are localized dead areas on the bark or stems, usually caused by fungal infections.
  • Leaf Spot Diseases: Caused by fungi or bacteria, these diseases manifest as dark spots on leaves.
  • Powdery Mildew: Appears as a white powdery substance on leaves, generally not life-threatening but unsightly.

Environmental Issues

  • Drought Stress: Tulip trees prefer consistent moisture. Drought can lead to leaf drop and increased susceptibility to diseases.
  • Poor Soil: Tulip trees prefer well-drained, fertile soil. Poor soil conditions can result in less vigorous growth.
  • Wind Damage: Due to their height, tulip trees are susceptible to wind damage, particularly when young.
  • Nutrient Deficiencies: Yellowing leaves may indicate a lack of essential nutrients, often nitrogen.

Mechanical Damage

  • Lawn Equipment: The bark can be easily damaged by lawnmowers or trimmers, making the tree susceptible to diseases.
  • Improper Pruning: Incorrect pruning can lead to a range of issues, including increased vulnerability to diseases.

Cultural Issues

  • Planting Depth: Trees planted too deep or too shallow can suffer from poor root development, leading to other issues.

Requirements

Hardiness 4 - 9
Heat Zones 2 - 9
Climate Zones 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Trees
Plant Family Magnoliaceae
Genus Liriodendron
Common names Tulip Poplar, Tulip Tree
Exposure Full Sun
Season of Interest Spring (Mid, Late)
Summer (Early, Mid, Late)
Fall
Height 60' - 80'
(18.3m - 24.4m)
Spread 30' - 40'
(9.1m - 12.2m)
Maintenance Low
Water Needs Average
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Plant of Merit, Showy
Native Plants United States, New Jersey, Vermont, Rhode Island, Pennsylvania, New York, Maryland, Massachusetts, Delaware, Connecticut, Southwest, Southeast, Northeast, Midwest, Missouri, Indiana, Michigan, Ohio, Iowa, Illinois, Tennessee, South Carolina, Virginia, West Virginia, North Carolina, Florida, Mississippi, Louisiana, Kentucky, Georgia, Arkansas, Alabama, Texas
Tolerance Deer, Rabbit, Clay Soil, Wet Soil
Attracts Birds, Butterflies, Hummingbirds, Bees
Garden Styles Prairie and Meadow
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Alternative Plants to Consider

Liriodendron tulipifera ‘Aureomarginatum’ (Tulip Tree)
Liriodendron chinense (Chinese Tulip Tree)

Recommended Companion Plants

Tilia americana (American Basswood)
Quercus shumardii (Shumard Oak)
Ulmus alata (Winged Elm)
Magnolia grandiflora (Southern Magnolia)
Aesculus pavia (Red Buckeye)
Morus rubra (Red Mulberry)
Rhododendron austrinum (Florida Flame Azalea)
Rhapidophyllum hystrix (Needle Palm)

Find In One of Our Guides or Gardens

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 4 - 9
Heat Zones 2 - 9
Climate Zones 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Trees
Plant Family Magnoliaceae
Genus Liriodendron
Common names Tulip Poplar, Tulip Tree
Exposure Full Sun
Season of Interest Spring (Mid, Late)
Summer (Early, Mid, Late)
Fall
Height 60' - 80'
(18.3m - 24.4m)
Spread 30' - 40'
(9.1m - 12.2m)
Maintenance Low
Water Needs Average
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Plant of Merit, Showy
Native Plants United States, New Jersey, Vermont, Rhode Island, Pennsylvania, New York, Maryland, Massachusetts, Delaware, Connecticut, Southwest, Southeast, Northeast, Midwest, Missouri, Indiana, Michigan, Ohio, Iowa, Illinois, Tennessee, South Carolina, Virginia, West Virginia, North Carolina, Florida, Mississippi, Louisiana, Kentucky, Georgia, Arkansas, Alabama, Texas
Tolerance Deer, Rabbit, Clay Soil, Wet Soil
Attracts Birds, Butterflies, Hummingbirds, Bees
Garden Styles Prairie and Meadow
How Many Plants
Do I Need?
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