Spiraea Douglasii Care

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.

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.

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.

Sun/Part Shade.

Perform well in most types of soil.

Temperatures between 65 (18 °C) to 75 F (23 °C) and nighttime temperatures between 50 t(10°C) to 60 F (15 °C).

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