Conifers
Douglas-fir
Pseudotsuga menziesii
Douglas-fir is an important timber tree that also may be used as an ornamental. Adequate soil moisture and humidity are important since dry conditions can damage or kill it. Growth is dense and pyramidal when young, becoming looser and more open with age. Missouri's hot summers and low humidity suppress rapid growth and may cause browning. It is most successful when planted where larger trees or buildings provide shade during hot summer afternoons.
Hardiness Zones: 4-7a
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