Glow White Lightning, also known as Lobelia erinus 'Glow,' is an annual or tender perennial flowering plant native to Southern Africa. Danziger developed the Glow cultivar for large blooms and better heat performance. This variety has a compact, mounding habit of 8-10" tall and a 12-14" spread, with small white flowers from spring until frost. A tender perennial in zone 10-11, this plant flourishes in sunny landscape borders, mass plantings, and containers, enticing pollinators with little more than regular water. Grow White Lightning alongside Glow Electric Blue for color contrast.
Glow White Lightning Selling Tips
Sell Glow White Lightning to customers looking for low-maintenance annual landscape or container plants. This plant offers many benefits, including early flowering and superior heat tolerance. With little more than regular water, Lobelia attracts butterflies to the landscape with beautiful white flowers all season. Each flower is small, but the overall impact of dark green foliage covered in white flowers is eye-catching in containers, edges, or landscape borders. Lobelia advances the cottage garden and flourishes in any sunny location. For a stunning mix of color and texture, plant Glow White Lightning with Lysimachia, Dianthus, Pansy, Snapdragon, and Diascia.
Coach Your Customer
1. Plant Lobelia in full sun in well-drained soil. Water regularly.
2. Remove plants at the end of the season in cold-weather regions. In zone 10-11, overwinter this plant outdoors.
General Growing Tips For Your Rooted Cutting Liner
For best results with Glow White Lightning, use well-drained soil with low feed (100-150 ppm N), a pH of 5.6-6.2, and an EC of 1.0-1.2. Plant two or three rooted liners per 4-inch container or 5 plugs per 10-inch basket. Maintain temperatures between 65-68degrees. This plant doesn't have major pest or disease problems, but does need full sun and regular water to thrive. You may see aphids, whiteflies, or thrips.
Flowering
Small white flowers bloom from spring to frost.
Pinching
Pinch once about 5-10 days after transplanting.
Spacing
Space containers for adequate airflow and sunlight penetration between the foliage of each plant. Usually 2’ centers on baskets will be enough.
Height Control
B-Nine, A-Rest and Bonzi have all been tested on Lobelia and are effective. In our experience, pinching is sufficient to create a well-shaped basket. If you decide to use PGRs, follow the label’s instructions. Danziger recommends a 2 ppm drench of Bonzi as needed to combat stretching.
Pests
You may see aphids, whiteflies, and thrips.
Disease
Glow White Lightning isn't prone to disease but avoid oversaturating the soil. Root rot and botrytis can develop in overly moist soil. Botrytis grey rot tends to occur in wet or humid conditions. Take these steps to prevent botrytis:
1. Water in the morning and allow the plant to dry out between waterings.
2. Provide good airflow in your greenhouse. We recommend using horizontal airflow fans.
3. Space plants so the sun can penetrate to the soil level. The most common chemicals used to treat botrytis are Medallion and Banrot. Use them as a drench according to each label’s instructions.
Planting Glow White Lightning Liners
We recommend planting 5 starter plants per 10-inch basket. Use a well-drained soil in your baskets and plant your starter plants deep, completely covering the ellepot with the soil. If you are planting 4-inch pots, use 2-3 plants per pot. When using 3 starters, plant them in a triangle in the middle of your pot.
Pinch Glow White Lightning 5-10 days after transplanting to your final container. Additional pinches every couple of weeks may be required to shape your final pot.
Rooted Cuttings
Cuttings vary in size between different plant families. These rooted starter plants will arrive ready to be transplanted in to your final container. If they are to be used in a landscape application, you will need to establish them in a 4 inch pot or an 1801 before planting outside.
Lobelia Glow White Lightning Quick Reference Guide
4 Inch crop time
6 Weeks
10 Inch crop time
8-10 Weeks
Bloom Period
Fall, Spring, Summer
Color
White
Habit
Compact, Mounding
Height
8-10 Inches
Light
Full Sun
Minimum Temp
65
Perennial Zone
10-11
Water Needs
Moderate
Patented Plant
Yes
Current
Availability
Current Availability
08-17-2026 (Week 34)
0
08-24-2026 (Week 35)
0
08-31-2026 (Week 36)
0
09-07-2026 (Week 37)
0
09-14-2026 (Week 38)
0
09-21-2026 (Week 39)
0
09-28-2026 (Week 40)
0
10-05-2026 (Week 41)
0
10-12-2026 (Week 42)
400
10-19-2026 (Week 43)
1,400
10-26-2026 (Week 44)
2,700
11-02-2026 (Week 45)
4,700
11-09-2026 (Week 46)
5,500
11-16-2026 (Week 47)
6,600
11-23-2026 (Week 48)
8,100
11-30-2026 (Week 49)
9,000
12-07-2026 (Week 50)
9,400
12-14-2026 (Week 51)
8,700
12-21-2026 (Week 52)
9,400
12-28-2026 (Week 53)
12,300
01-04-2027 (Week 01)
15,400
01-11-2027 (Week 02)
17,700
01-18-2027 (Week 03)
20,800
01-25-2027 (Week 04)
22,400
02-01-2027 (Week 05)
22,700
02-08-2027 (Week 06)
20,700
02-15-2027 (Week 07)
21,200
02-22-2027 (Week 08)
19,800
03-01-2027 (Week 09)
22,100
03-08-2027 (Week 10)
22,400
03-15-2027 (Week 11)
20,000
03-22-2027 (Week 12)
23,100
03-29-2027 (Week 13)
13,400
04-05-2027 (Week 14)
13,800
04-12-2027 (Week 15)
13,900
04-19-2027 (Week 16)
13,900
04-26-2027 (Week 17)
13,900
05-03-2027 (Week 18)
13,900
05-10-2027 (Week 19)
8,100
05-17-2027 (Week 20)
8,100
Glow White Lightning, also known as Lobelia erinus 'Glow,' is an annual or tender perennial flowering plant native to Southern Africa. Danziger developed the Glow cultivar for large blooms and better heat performance. This variety has a compact, mounding habit of 8-10" tall and a 12-14" spread, with small white flowers from spring until frost. A tender perennial in zone 10-11, this plant flourishes in sunny landscape borders, mass plantings, and containers, enticing pollinators with little more than regular water. Grow White Lightning alongside Glow Electric Blue for color contrast.
Glow White Lightning Selling Tips
Sell Glow White Lightning to customers looking for low-maintenance annual landscape or container plants. This plant offers many benefits, including early flowering and superior heat tolerance. With little more than regular water, Lobelia attracts butterflies to the landscape with beautiful white flowers all season. Each flower is small, but the overall impact of dark green foliage covered in white flowers is eye-catching in containers, edges, or landscape borders. Lobelia advances the cottage garden and flourishes in any sunny location. For a stunning mix of color and texture, plant Glow White Lightning with Lysimachia, Dianthus, Pansy, Snapdragon, and Diascia.
Coach Your Customer
1. Plant Lobelia in full sun in well-drained soil. Water regularly.
2. Remove plants at the end of the season in cold-weather regions. In zone 10-11, overwinter this plant outdoors.
General Growing Tips For Your Rooted Cutting Liner
For best results with Glow White Lightning, use well-drained soil with low feed (100-150 ppm N), a pH of 5.6-6.2, and an EC of 1.0-1.2. Plant two or three rooted liners per 4-inch container or 5 plugs per 10-inch basket. Maintain temperatures between 65-68degrees. This plant doesn't have major pest or disease problems, but does need full sun and regular water to thrive. You may see aphids, whiteflies, or thrips.
Flowering
Small white flowers bloom from spring to frost.
Pinching
Pinch once about 5-10 days after transplanting.
Spacing
Space containers for adequate airflow and sunlight penetration between the foliage of each plant. Usually 2’ centers on baskets will be enough.
Height Control
B-Nine, A-Rest and Bonzi have all been tested on Lobelia and are effective. In our experience, pinching is sufficient to create a well-shaped basket. If you decide to use PGRs, follow the label’s instructions. Danziger recommends a 2 ppm drench of Bonzi as needed to combat stretching.
Pests
You may see aphids, whiteflies, and thrips.
Disease
Glow White Lightning isn't prone to disease but avoid oversaturating the soil. Root rot and botrytis can develop in overly moist soil. Botrytis grey rot tends to occur in wet or humid conditions. Take these steps to prevent botrytis:
1. Water in the morning and allow the plant to dry out between waterings.
2. Provide good airflow in your greenhouse. We recommend using horizontal airflow fans.
3. Space plants so the sun can penetrate to the soil level. The most common chemicals used to treat botrytis are Medallion and Banrot. Use them as a drench according to each label’s instructions.
Planting Glow White Lightning Liners
We recommend planting 5 starter plants per 10-inch basket. Use a well-drained soil in your baskets and plant your starter plants deep, completely covering the ellepot with the soil. If you are planting 4-inch pots, use 2-3 plants per pot. When using 3 starters, plant them in a triangle in the middle of your pot.
Pinch Glow White Lightning 5-10 days after transplanting to your final container. Additional pinches every couple of weeks may be required to shape your final pot.
Rooted Cuttings
Cuttings vary in size between different plant families. These rooted starter plants will arrive ready to be transplanted in to your final container. If they are to be used in a landscape application, you will need to establish them in a 4 inch pot or an 1801 before planting outside.
Lobelia Glow White Lightning Quick Reference Guide
4 Inch crop time
6 Weeks
10 Inch crop time
8-10 Weeks
Bloom Period
Fall, Spring, Summer
Color
White
Habit
Compact, Mounding
Height
8-10 Inches
Light
Full Sun
Minimum Temp
65
Perennial Zone
10-11
Water Needs
Moderate
Patented Plant
Yes
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