Nierembergia
- Botanical Name
- Nierembergia
- Hardiness
- Zones 7 to 10, grown as an annual elsewhere
- Height
- 6 to 12 inches
- Width
- 6 to 12 inches
- Flowers
- Summer: blue, violet, white
- Light
- Full sun to part shade
- Soil
- Moist, well-drained, rich in organic matter
- Planting & Care
- Provide consistent moisture
- Nierembergia benefits from light shade if grown in hot and dry climates
- Best flowering occurs in cool summer climates
- Mulch soil with a layer of organic matter to retain soil moisture and keep soil cool
- Sow seeds directly outdoors a few weeks before the last frost date or indoors 8-10 weeks before last spring frost
- Pinch plants for fuller growth
- Deadhead for repeated bloom
- Cut plants back during mid summer heat if flowering has declined, this will encourage flowering later in the season
- Stem cuttings can be taken later in the season for overwintering indoors
- Problems
- None serious
- Varieties
- Monte Blanc - white flowers, 6" tall, 1993 AAS Winner
- Purple Robe - violet blue flowers, 8"
- Regal Robe - deep purple flowers, 6"
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