Garden phlox 'Roberta' is a flowering plant that produces bright scarlet flowers, in marked contrast to the white or purple flowers of the native plant. While the parent often grows up to 1.2 m, this hybrid reaches just 60 cm. Like many plants with pretty flowers, this hybrid has been given a popular ladies' name. The plant grows well in full or partial shade.
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Perennial
Lifespan
Herb
Plant Type
60 cm
Plant Height
45 cm
Spread
Winter dormancy
Dormancy
Deciduous
Leaf type
On This Page
Care Guide
Common Diseases
Care Guide for Garden phlox 'Roberta'
Every week
Water
Full sun
Sunlight
5 - 35 ℃
Ideal Temperature
Water:
Garden phlox 'Roberta' thrives in environments with consistent moisture and prefers weekly watering without being waterlogged. It exhibits moderate drought tolerance and benefits from additional hydration during the peak growing season to enhance its vibrant blooms and robust growth.
Pruning:
Garden phlox 'Roberta' thrives with early and late spring pruning, removing damaged stems to encourage growth and improve air circulation. Regular deadheading and cutting back stems by one-third post-flowering can stimulate a second bloom, promoting structural integrity and visual appeal.
Propagation:
Garden phlox 'garden phlox 'Roberta'' thrives through careful seed sowing. Press seeds into moist, well-drained soil, as light aids germination. Maintain warmth and consistent moisture until seedlings are strong enough to transplant for optimal growth.
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