Spiraea Douglasii

Spiraea Douglasii Care

Spiraea Douglasii

What is the plant

Noted for its vigor, Spiraea douglasii (Western Spirea) is a clump-forming, suckering shrub with narrowly oblong leaves that are dark green above, velvety white underneath and turn yellow in fall. In early summer, long plumes of fragrant, rose-pink flowers, up to 8 in. long (20 cm), are on display at the tips of the branches.

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Humidity

High

Lighting

Part Sun

Temperature

-3°C - 7°C

Hardiness zone

5 - 8

Difficulty

Medium

Toxicity

Poisonous

How to Care for the Plant

Water
Keep newly planted spireas well-watered until they become established. Mature spireas are drought tolerant and only need watering when the soil becomes dry. Spireas don't like wet feet, so avoid oversaturating the soil.
Pruning
You should actually prune your spirea more than once a year, at least twice. Give it a good trim after it flowers in the spring by cutting back the tips of the stems to the top leaf bud. This removes the dead blossoms and also may trigger a second blooming and new leaf growth. You can also shape the shrub at this time. More drastically cutting back spirea should occur in the fall or in late winter to early spring. Remove any dead branches and use this trimming to shape the shrub. Cutting it way back will stimulate new growth in tighter clusters so that you can get a more rounded, compact shrub shape.
Fertilizer
Young plants need extra phosphorus to encourage good root development. Look for a fertilizer that has phosphorus, P, in it (the second number on the bag.) Apply recommended amount for plant per label directions in the soil at time of planting or at least during the first growing season.

Disease diagnosis

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Sunlight
Sun/Part Shade.
Soil
Perform well in most types of soil.
Temperature
Temperatures between 65 (18 °C) to 75 F (23 °C) and nighttime temperatures between 50 t(10°C) to 60 F (15 °C).