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Products > Polygala myrtifolia 'Grandiflora'   Polygala myrtifolia 'Grandiflora' - Sweet Pea Shrub Note: This plant is not currently for sale. This is an archive page preserved for informational use.     Habit and Cultural Information Category: Shrub Family: Polygalaceae (Milkworts) Origin: South Africa (Africa) Evergreen: Yes Flower Color: Purple Bloomtime: Year-round Height: 8-12 feet Width: 8-12 feet Exposure: Sun or Shade Irrigation (H2O Info): Medium Water Needs Winter Hardiness: 20-25° F Polygala myrtifolia 'Grandiflora' (Sweet Pea Shrub) - A large dense evergreen shrub that grows to 10 feet or more tall by an equal spread. The unique rich purple flowers have two winged petals that surround the whitish purple lacy crest. They bloom during most of the year, spring is their peak bloom period. Plant in sun or part shade with regular watering. Polygala myrtifolia is one of the parents of the popular Polygala x dalmaisiana (the other parent is Polygala oppositifolia) from which it differs by being a bigger plant with larger brighter green foliage and larger flowers. The form 'Grandiflora' is reportedly the large flower selection although we have never seen the straight species. The name Polygala is Latin from the Greek word 'polugalon' for "much milk" because of the belief that cows grazing on milkwort increased their milk production.  The information on this page is based on the research that we have conducted about this plant in the San Marcos Growers library, from what we have found on reliable online sources, as well as from observations made of our crops of this plant growing in the nursery and of plants growing in the nursery's garden and those in other gardens where we may have observed it. We also have incorporated comments received from others and welcome getting feedback from those who may have additional information, particularly if this information includes cultural information that would aid others in growing Polygala myrtifolia 'Grandiflora'.