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Geranium x Cantabrigiense 'Brookside' is a hardy, long-blooming perennial geranium known for its rich violet-blue flowers with delicate white centers. The finely cut, medium green foliage forms a dense, mounding habit that turns attractive shades of red and orange in autumn. 'Brookside' is a versatile and reliable choice for borders, ground cover, and pollinator gardens.
Description:
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Dimensions: 18–24 in. tall × 24–36 in. wide
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Sun Exposure: Full sun to part sun
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Water Requirements: Moist, well-drained soil; tolerates short dry periods once established
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Hardiness Zones: USDA Zones 4–8
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Bloom Time: Late spring to midsummer (May–July), with occasional rebloom in fall
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Pruning: Shear back after flowering to encourage fresh foliage and possible rebloom
How to Plant:
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Location: Garden borders, cottage gardens, or as ground cover
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Soil Preparation: Well-drained soil enriched with compost or organic matter
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Planting: Space plants 18–24 inches apart; plant at same depth as in nursery pot
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Watering: Water regularly during establishment, then moderately as needed
Fun Fact:
'Brookside' is a popular hybrid geranium because of its unusually large, vivid blue flowers, which attract bees and butterflies and provide long-lasting color in the garden.