Zone 4 Trees
Tilia cordata
Littleleaf Linden
Family Tiliaceae

http://selectree.calpoly.edu/tree-detail/1408#:~:text=Photos%20taken%20at,Mark%2C%20J.%20Reimer
Site Conditions
- Planting area: 10’
- Root Damage Potential: Moderate
- SelecTree Water Use: Medium
- USDA zones: 4, 5, 6, 7, 8
- Sun exposure: Partial Shade to Full Sun
- Soil texture: Loam, Sand, or Clay
- Soil pH: Very Acidic to Slightly Alkaline
- Soil salinity tolerance: Moderate
- Powerline friendly: No
Tree Characteristics
- Tree Shape: Rounded
- Foliage type: Deciduous
- Maximum height: 60 feet
- Canopy width: 15-30 feet
- Growth rate: ~12-24 in/year
- Flowers: Showy, Fragrant
- Flowering: Summer
- Fruiting: Fall
- Litter: Small Dry Fruit
Site Consideration
Streetscape, Tree Specimen, Parkland
Catalpa speciosa
Northern Catalpa
Family Bignoniaceae

Photos taken at National Arboretum – Washington, D.C., Los Angeles County Arboretum – Arcadia, CA, by M. Ritter, W. Mark, J. Reimer
Site Conditions
- Planting area: < 10’
- Root Damage Potential : Moderate
- SelecTree Water Use: Medium
- USDA zones: 4, 5, 6, 7, 8
- Sun exposure: Full Shade to Full Sun
- Soil texture: Loam, Sand, or Clay
- Soil pH: Very Acidic to Very Alkaline
- Soil salinity tolerance: Moderate Inland
- Powerline friendly: No
Tree Characteristics
- Tree Shape: Rounded
- Foliage type: Deciduous
- Maximum height: 60 feet
- Canopy width: 20-40 feet
- Growth rate: ~24-36 in/year
- Flowers: Showy
- Flowering: Summer
- Fruit: Large Brown Capsule
- Fruiting: Fall
- Litter: Dry Fruit
Site Consideration
Streetscape, Parkland, Tree Specimen
Parrotia persica
Persian Ironwood
Family Hamamelidaceae

Photos taken at Dallas Arboretum – Dallas, TX, Los Angeles County Arboretum – Arcadia, CA, Strybing Arboretum – San Francisco, CA, San Luis Obispo, CA, Hoyt Arboretum – Portland, OR, Finch Arboretum – Spokane, WA and The National Arboretum – Washington, DC by M. Ritter, C. Stubler, W. Mark, J. Reimer
Site Conditions
- Planting area: 5’ to 10’
- Root Damage Potential : Moderate
- SelecTree Water Use: Medium
- USDA zones: 4, 5, 6, 7
- Sun exposure: Partial Shade to Full Sun
- Soil texture: Loam or Sand
- Soil pH: Acidic to Neutral
- Soil salinity tolerance: Moderate
- Powerline friendly: No
Tree Characteristics
- Tree Shape: Rounded
- Foliage type: Deciduous
- Maximum height: 35 feet
- Canopy width: 15-35 feet
- Growth rate: ~12-24 in/year
- Flowers: Showy
- Flower color: Red
- Flowering: Spring
- Fruit: Medium Capsule
- Fruiting: Summer or Fall
- Litter: Fruit
Site Consideration
Screen, Streetscape, Tree Specimen