What are the light requirements for Paulownia tomentosa?
Princess trees thrive in full sun, requiring at least 6-8 hours of direct sunlight per day for optimal growth and flowering.
Princess Tree (Paulownia tomentosa)
Princess tree (Paulownia tomentosa) is a fast-growing deciduous tree with large, heart-shaped leaves and showy, trumpet-shaped purple flowers.
Above information is sourced from Wikipedia
Sunlight
Full Sun
Watering
Moderate
Soil
Well-drained, fertile
Temperature
Moderate
Fertilizer
Low
Care Requirements
Light
Full Sun
Prefers full sun for best growth and flowering. Tolerates partial shade but may become leggy.
Watering
Moderate
Keep soil consistently moist but not waterlogged, especially when young or during dry spells.
Soil
Well-drained, fertile
Temperature
Moderate
Hardy in USDA zones 4-9. Prefers moderate temperatures for optimal growth; can tolerate heat and some cold.
Fertilizer
Low
Requires minimal fertilizer once established. Feed young trees annually in spring with a balanced fertilizer.
Plant Overview
Plant Type
Tree
Plant Category
Ornamental
Plant Place Type
Garden, Pot
Lifespan
Perennial
Plant Height
9.1-12.2m
Spread
6.1-12.2m
Growth Rate
Fast
Dormancy
Deciduous
Leaf Color
Green
Leaf Type
Simple
Flower Size
3-5cm
Optimal Sunlight Lux
64500
Weed Status
Yes
Image Gallery
Flowering & Fruiting Cycles
Monthly activity intensity for bloom and fruit across both hemispheres.
Northern hemisphere
Flowering & fruiting calendar
Peak bloom · MayPeak fruit · Aug
FloweringFruiting
Southern hemisphere
Flowering & fruiting calendar
Peak bloom · SepPeak fruit · Nov
FloweringFruiting
Taxonomy
- kingdomPlantae
- divisionTracheophyta
- classMagnoliopsida
- orderLamiales
- familyPaulowniaceae
- genusPaulownia
- speciesPaulownia tomentosa
Toxicity
Toxic for humans
No
Rating: 0/5
Toxic for pets
No
Rating: 0/5
Edible
No
Non-toxic
Additional Care Tips
Water regularly, especially during the first few years and dry periods. Ensure soil remains consistently moist but not waterlogged. Reduce watering in winter. Mature trees are more drought-tolerant once established, but benefit from occasional deep watering during prolonged heat.
Prune in late winter or early spring to remove dead, damaged, or crossing branches. Can be heavily pruned to encourage vigorous new growth and larger leaves, or lightly shaped to maintain form. For the dramatic large-leaf effect, cut back hard annually.
Easily propagated from seed, which requires stratification (cold treatment) before sowing. Can also be propagated from cuttings, typically semi-hardwood cuttings taken in summer. Layering is another effective method for creating new plants.
Young trees benefit from repotting every 1-2 years to refresh soil and provide more space for root growth. Use a well-draining potting mix. Mature trees generally do not require repotting unless grown in containers, in which case, repot when root-bound.
FAQs
How often should I water a princess tree?
Young trees need consistent moisture, especially during their first few years. Water deeply when the top inch of soil feels dry. Mature trees are more drought-tolerant but benefit from watering during prolonged dry spells.
What type of soil is best for Paulownia tomentosa?
Paulownia tomentosa prefers well-drained soil. It can tolerate a range of soil types, including sandy, loamy, and clay soils, but waterlogged conditions should be avoided.
When is the best time to plant a princess tree?
The ideal time to plant Paulownia tomentosa is in early spring, after the last frost has passed, or in early autumn before the ground freezes.
Is Paulownia tomentosa invasive?
In some regions, Paulownia tomentosa can be considered invasive due to its rapid growth and prolific seed production, which can outcompete native vegetation.