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Home Page » Home & Garden » Gardening » Lacecap hydrangea: Hydrangea serrata Bluebird

Lacecap hydrangea: Hydrangea serrata Bluebird

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Hardy to Zone 5 and unusually drought resistant, this old Japanese cultivar is a good choice for gardens that have proven inhospitable to other lacecap hydrangeas. But 'Bluebird' is more than just an expedient?it's an unusually lovely shrub that blooms continuously from early summer to frost. 'Bluebird' bears lacecap-type flower heads with startling blue centers surrounded by a band of sterile, light-blue to deep-purple florets, depending on the soil pH. Adding to its appeal is the handsome reddish-brown color that the leaves turn with the onset of fall.

Profile

Plant typeshrub
Hardiness zones5 to 9
Lightlight-shade--filtered-sun
Height up to 5 ft.
Spread up to 5 ft.
Habitbushy
Soil moisturemoist
Bloom timefall,summer
Flower colorblue
Bloom size4 in. to 4 in.
Foliage colormedium-green
Foliage size8 in. to 8 in.

did you know?

Lacecap hydrangeas are so named for their flattened flower clusters with tiny, fertile flowers surrounded by larger blooms, which give them a lacy appearance.

general maintenance:

In early spring, deadhead, taking care not to damage the emerging, swollen green buds, and remove any dead branches, or if necessary, old growth, making all cuts at the base of the plant

pests/diseases:

Aphids, scale insects, whiteflies, and honey fungus may occur.

controls:

Regularly hose off aphids with a directed stream of water, or apply insecticidal soap, following label directions. To control scale, remove with a cotton swab dipped in alcohol, and remove infested leaves. Spray whiteflies with insecticidal soap, following label directions. To discourage honey fungus, remove and destroy diseased plants.

how to sow/plant:

Start with new plants, rooted softwood cuttings, or fall divisions. Plant in spring or fall; choose a partly shady site with moist, well-drained soil, and amend with well-rotted manure or compost. Set plants at same depth they were in pot, spacing at distance equal to plants' mature spread. Water upon planting, and mulch to conserve moisture.

water and fertilize:

Monitor soil moisture all season. In dry periods, hydrangea leaves become distinctly wilted; water immediately when this happens. In spring and after flowering, feed with a balanced fertilizer, following label directions.

garden hint:

With many hydrangeas, flower color is often determined by the soil pH. To encourage blue flowers, lower pH by amending the soil with sulfur, peat, potash, or sulfate before planting; to encourage pink flowers, raise pH by adding lime to soil, following label instructions.

features:

  • Attractive Flowers
  • Attractive Foliage
  • Deciduous
  • Drought Tolerant
  • Shade Tolerant
  • Winter Interest

garden uses:

  • Containers
  • Flowerbed borders
  • Shade Woodland Garden

other uses:

  • Cut Flower
  • Everlasting (>)

combine with:

viburnum, red-twig dogwood and sweetshrub

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