Hare's Ear, Roundleaf Thorow Wax, Thoroughwax
Bupleurum rotundifolium 'Green Gold'

Family: Apiaceae (ay-pee-AY-see-ee) (Info)
Genus: Bupleurum (boo-PLUR-rum) (Info)
Species: rotundifolium (ro-tun-dih-FOH-lee-um) (Info)
Cultivar: Green Gold

Category:

Annuals

Tropicals and Tender Perennials

Foliage Color:

Blue-Green

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Suitable for growing in containers

Height:

24-36 in. (60-90 cm)

Spacing:

9-12 in. (22-30 cm)

Hardiness:

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

Sun Exposure:

Full Sun

Danger:

N/A

Bloom Color:

Chartreuse (Yellow-Green)

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Foliage:

Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; direct sow after last frost

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Regional

This plant has been said to grow in the following regions:

Wasilla, Alaska

Barbourville, Kentucky

Columbus, Ohio

Sherwood, Oregon

Wilkes Barre, Pennsylvania

Austin, Texas

Vernal, Utah

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Gardeners' Notes:

3
positives
0
neutrals
0
negatives
RatingContent
Positive

On Jan 20, 2010, SW_gardener from (Zone 6a) wrote:

I love this plant! Its easy to grow from a spring sowing and the round blue-ish green leaves with the pretty yellow-green flowers are very unique!

Positive

On Mar 8, 2008, jrtinker from Palmer, AK (Zone 3b) wrote:

This is an easy self sowing annual that is wonderful for cut flower arrangements. It is rare here, and I'm not sure why. The biggest challenge at keeping it each year is to recognize the seedlings, and don't over cultivate in the early spring.

Positive

On Jan 16, 2005, LilyLover_UT from Ogden, UT (Zone 5b) wrote:

This intriguing, self-sowing annual blooms in a chartreuse green color that brings out the colors of other flowers, especially bright ones. It's also nice for flower arranging. It's easy to grow from seed -- direct sow in mid spring.