Species cupflower
purple-pink flowers with yellow center, purple-white buds, green leaves and stems

cupflower

Nierembergia scoparia 'Purple Robe'

The cupflower or Nierembergia scoparia 'Purple Robe' is an attractive, low-maintenance annual that will add bold colour to your flowerbeds. It is easy to cultivate with average soil and loves full sun. Its unique purple blooms have a metallic sheen and are borne on sprawling, lush foliage. This perennial thrives in summer heat but will not tolerate frost. It is drought tolerant and pest free, and its flowers will attract butterflies and hummingbirds to your garden. Ideal for borders, rock gardens, and in containers, the cupflower's lovely colour will brighten your yard all season long.

Cycle:

Herbaceous Perennial

Watering:

Average

Propagation:

Cutting,Division,Seed Propagation,Layering Propagation

Hardiness Zone:

7 - 10

Flowers:

Violet-blue Flowers

Sun:

Full sun,part shade

Leaf:

Yes

Leaf Color:

purple

Growth Rate:

Low

Maintenance:

Moderate

Drought Tolerant:

Yes

Care Level:

Moderate

watering

Cupflower needs regular watering to ensure healthy growth. Generally, water the plant deeply once or twice per week, allowing the soil to dry out slightly between waterings. When watering, water until the soil is evenly and thoroughly moist and let the excess water drain off. During hot weather, water more frequently. Cupflowers are sensitive to overly moist soil, so don't overwater them and ensure the soil drains well. When temperatures are cooler, reduce watering and make sure the soil has had enough time to dry out before watering again.

sunlight

Cupflower (Nierembergia scoparia 'Purple Robe') is best grown in full sun to partial shade. For optimal growth and flowering, it should get at least 6 hours of direct, unfiltered sunlight each day. Afternoon shade can be beneficial in hot summer climates. This plant can tolerate some light shade and will still bloom quite nicely, but it will avoid becoming leggy or etiolated. It will also bloom more heavily when it receives at least 4 hours of direct sunlight each day. If grown in deep shade, flowering will be greatly reduced.

pruning

Cupflower (Nierembergia scoparia 'Purple Robe') should be pruned regularly to keep the plant healthy and looking its best. Pruning should take place in late winter or early spring before new growth emerges. Lightly trim the stems to shape the plant, removing any dead, diseased, or damaged branches. Keep the overall shape of the Cupflower neat but do not cut too far back as this may stunt the growth of the plant. Avoid pruning too deeply, as this can damage the root system and lead to a weak plant.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Nierembergia scoparia 'Purple Robe' typically starts flowering in late spring, usually in May or June.

Starts Flowering

Nierembergia scoparia 'Purple Robe' typically starts flowering in late spring, usually in May or June.

Hardiness Map