Alternanthera (also known as Joseph's Coat) is a sun-loving annual that is perfect for landscape use. These plants tolerate sun or shade, but they are most colorful in full sun. Alternanthera have a mounding, shrubby habit and grow to a height of 10in-14in. The shorter day length of spring and fall yield richer colors. Red and yellow varieties work well together because they are the same height.
General Growing Tips For Your Rooted Cutting Liner
To achieve best results with Joseph's Coat, use well-drained soil and plant in full sun. The amount of sunlight on the Alternanthera affects the color of the leaves. We recommend using a constant feed program of 200 ppm N. Maintain a pH between 5.5 - 5.8.
Pinching
Red Carpet is a mounding plant and will probably not require pinching. A light pinch might become necessary to shape the plant for your final needs.
Spacing
Joseph’s Coat can be grown pot tight in 1801s or 4 inch pots.
Height Control
While Alternanthera are responsive to plant growth regulators, you usually do not need them because the plants are not prone to stretch and get tall.
Pests
Whiteflies and possibly aphids are the biggest pest problems with Joseph’s Coat.
Disease
Red Carpet are not prone to many diseases, but watch for botrytis while the days are short. This grey rot is usually associated with wet or humid conditions. You can prevent botrytis by allowing the plant to dry out between waterings, allowing for good airflow in your greenhouse, and spacing to allow the sun to 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 Red Carpet Liners
We recommend planting 1 starter plant per 4 inch pot or 1801. Use a well-drained soil in your baskets and plant your starter plants deep, allowing the ellepot to be completely covered by the soil. Plant it directly in the middle of your pot.
Pinching is not required.
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.
Alternanthera Red Carpet Quick Reference Guide
4 Inch crop time
6-8 Weeks
Habit
Mounding
Height
10 inches
Light
Full Sun
Minimum Temp
60
Perennial Zone
10-11
Water Needs
Moderate
Patented Plant
No
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365
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0
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4,500
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4,500
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4,500
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4,500
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4,500
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4,500
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4,500
11-02-2026 (Week 45)
4,500
11-09-2026 (Week 46)
4,500
11-16-2026 (Week 47)
4,500
11-23-2026 (Week 48)
4,400
11-30-2026 (Week 49)
4,500
12-07-2026 (Week 50)
4,500
12-14-2026 (Week 51)
0
12-21-2026 (Week 52)
0
12-28-2026 (Week 53)
0
01-04-2027 (Week 01)
0
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0
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0
Alternanthera (also known as Joseph's Coat) is a sun-loving annual that is perfect for landscape use. These plants tolerate sun or shade, but they are most colorful in full sun. Alternanthera have a mounding, shrubby habit and grow to a height of 10in-14in. The shorter day length of spring and fall yield richer colors. Red and yellow varieties work well together because they are the same height.
General Growing Tips For Your Rooted Cutting Liner
To achieve best results with Joseph's Coat, use well-drained soil and plant in full sun. The amount of sunlight on the Alternanthera affects the color of the leaves. We recommend using a constant feed program of 200 ppm N. Maintain a pH between 5.5 - 5.8.
Pinching
Red Carpet is a mounding plant and will probably not require pinching. A light pinch might become necessary to shape the plant for your final needs.
Spacing
Joseph’s Coat can be grown pot tight in 1801s or 4 inch pots.
Height Control
While Alternanthera are responsive to plant growth regulators, you usually do not need them because the plants are not prone to stretch and get tall.
Pests
Whiteflies and possibly aphids are the biggest pest problems with Joseph’s Coat.
Disease
Red Carpet are not prone to many diseases, but watch for botrytis while the days are short. This grey rot is usually associated with wet or humid conditions. You can prevent botrytis by allowing the plant to dry out between waterings, allowing for good airflow in your greenhouse, and spacing to allow the sun to 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 Red Carpet Liners
We recommend planting 1 starter plant per 4 inch pot or 1801. Use a well-drained soil in your baskets and plant your starter plants deep, allowing the ellepot to be completely covered by the soil. Plant it directly in the middle of your pot.
Pinching is not required.
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.
Alternanthera Red Carpet Quick Reference Guide
4 Inch crop time
6-8 Weeks
Habit
Mounding
Height
10 inches
Light
Full Sun
Minimum Temp
60
Perennial Zone
10-11
Water Needs
Moderate
Patented Plant
No
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