Paulownia tomentosa

Features and care

Paulownia tomentosa, known as the princess tree or foxglove tree, is a very fast-growing deciduous tree. Its large leaves and flower clusters explain its ornamental use as a shade tree or flowering specimen; it is described here without recommending it indiscriminately for new plantings.

The crown is rounded and spreading, with large, oval leaves that are densely hairy underneath. In spring, before the leaves emerge, clusters of lilac tubular flowers open, spotted and streaked inside. They are followed by oval woody capsules that change from green to brown as they ripen.

In sunny conditions it reaches 12 to 20 m. It requires dry to cool, well-drained soil, with low supplemental watering during establishment and dry spells. The soil should be allowed to dry out partially between waterings. Its tolerance to humid air is medium and it withstands the winter frosts of the USDA 5–9 range; flowering depends on the condition of the buds and on each year’s weather.

At Ornacom we cultivate each specimen directly, guaranteeing a balanced size and abundant flowering from the first years of planting.

Extended species profile

Verified cultivation data, designed so any visitor can see at a glance whether the plant suits their climate and garden.

Cultivation

Exposure

Full sun

Watering

ORN-RIEGO 2/5 · low — supplemental watering during establishment and drought; let dry out partially

Soil / moisture

Dry to cool; well drained

Flowering

Spring

Climate

USDA hardiness

Zones 5 – 9

Compatible climates

Cfa, Cwa, Dfa mild, Csa

Humid climate tolerance

ORN-HUM 3/5 · medium

Maintenance

Growth

ORN-ALT 5/5 · 12–20 m · very fast growth

Pests

ORN-PLAGA 3/5 · medium — sap-sucking/boring insects and leaf or root fungi; watch for water stress

Fertilising

ORN-ABONO 2/5 · low — prioritise soil and organic matter; fertilise in spring only based on analysis and vigour

  • Warning

Invasive species in many countries; fast growth, brittle wood and abundant seed.

Extended species profile

Verified cultivation data, designed so any visitor can see at a glance whether the plant suits their climate and garden.

Cultivation

Exposure

Full sun

Watering

ORN-RIEGO 2/5 · low — supplemental watering during establishment and drought; let dry out partially

Soil / moisture

Dry to cool; well drained

Flowering

Spring

Climate

USDA hardiness

Zones 5 – 9

Compatible climates

Cfa, Cwa, Dfa mild, Csa

Humid climate tolerance

ORN-HUM 3/5 · medium

Maintenance

Growth

ORN-ALT 5/5 · 12–20 m · very fast growth

Pests

ORN-PLAGA 3/5 · medium — sap-sucking/boring insects and leaf or root fungi; watch for water stress

Fertilising

ORN-ABONO 2/5 · low — prioritise soil and organic matter; fertilise in spring only based on analysis and vigour

  • Warning

Invasive species in many countries; fast growth, brittle wood and abundant seed.

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