• Overview
    Light Needs:
    Partial to full sun
    Watering Needs:
    Water regularly - weekly, or more often in extreme heat or containers.
    Average Landscape Size:
    Upright, vase-shaped shrub; reaches 6 to 8 ft. tall, 6 ft. wide.
    Key Feature:
    Showy Summer Flowers
  • Detail
    Botanical Pronunciation:hi-BIS-kus si-ri-A-kus
    Plant type:Shrub
    Sunset climate zones:2 - 21, 26, 28 - 41
    Growth rate:Moderate
    Average landscape size:Upright, vase-shaped shrub; reaches 6 to 8 ft. tall, 6 ft. wide.
    Foliage color:Green
    Flower color:Blue
    Flower attributesShowy Flowers
    Garden styleAsian/Zen, Cottage, Rustic
    Design IdeasA beautiful large flowering shrub that makes an outstanding background for beds and mixed borders. Spreads out generously along fence lines and fills in foundation planting along large barren walls. A natural for shrub borders and island planting. Perfect candidate for English cottage gardens or American country and colonial style landscapes.
    Companion PlantsViburnum (Viburnum); Lilac (Syringa); Potentilla (Potentilla); Lavender (Lavandula); Phlox (Phlox)
  • Care
    Care Information
    Adaptable to most well-drained soils except very wet or dry. Water deeply, regularly during first growing season to establish extensive root system. Once established reduce frequency; tolerates brief periods of drought. Apply fertilizer before new growth begins in spring. Prune after flowering to shape or promote vigorous new growth.Pruning time: late winter or early spring.
    Light Needs:
    <strong>Partial Sun / Partial Shade</strong>: These two terms are often used interchangeably to mean 3-6 (or 4-6) hours of sunlight each day. However, there is a difference.
<strong>Partial shade</strong> typically means the plants will appreciate a more gentle exposure such as the weaker morning or early afternoon sun, with the emphasis on providing the minimum needed shade and sheltering from intense late afternoon sun. <strong>Partial sun</strong> typically means the plants <u>need</u> some direct sun, so the emphasis is on meeting the required minimum hours of sunlight, with filtered sunlight or shade the balance of the day.
Both are best with shelter from the harshest late afternoon sun. This shade could be provided by a structure, a wall, larger plants or  tree(s).
    Partial to full sun
    Watering Needs:
    Water needs: Moderate
    Water regularly - weekly, or more often in extreme heat or containers.
  • History & Lore
    This plant is known as the Syrian mallow because it was introduced into Europe before the 16th century by Arab traders who originally collected it from Eastern Asia. It is well noted in ancient Chinese literature as well as that of Vietnam and Korea. It is included into the mallow family containing over 200 species from around the world. The purple coloring or blue has been contributed by early breeding with H. s. amplissimus, a common ancestor to all but the original white strains.
    The species name, syriacus indicates the belief that the Arabian plant originated in Syria, but is in fact an Asian plant.