Mammoth White, also known as Lathyrus odoratus, is a vigorous climbing annual with origins in the Mediterranean region. This professional-grade cultivar is part of the "Mammoth" series, which was developed specifically for the cut flower industry to offer earlier blooms, larger flower sizes, and longer, sturdier stems. Reaching a mature height of 60 to 72 inches with the proper support, these plants produce masses of ruffled, pure-white blooms that release an intoxicating, sweet fragrance from late spring through early summer. They perform best in full sun and rich, well-drained soil, making them a staple for vertical garden displays and high-value cut flower production. For a breathtaking spring display, try pairing them with companions like larkspur (Delphinium), snapdragons, or Ammi majus.
Mammoth White Selling Tips
Sell Mammoth White to customers who are looking for premium, high-fragrance cut flowers and vertical interest for their spring gardens. Because the Mammoth series is less sensitive to day length, it allows for earlier spring harvests, giving your customers a head start on the season. Home gardeners will love the romantic look of the pure white vines climbing up fences or trellises, while florists will prize the long stems and excellent vase life for bridal work and spring arrangements. Remind your customers that the more they cut the flowers, the more the plant will bloom, providing them with weeks of fragrant indoor bouquets.
Coach Your Customer Plant in a sunny spot with rich soil as soon as the ground can be worked in the spring, as these plants love the cool weather. Be sure to provide a sturdy trellis, fence, or netting immediately, as these vines will need something to climb as they grow. Keep the soil consistently moist and mulch the base of the plants to keep the roots cool as the weather warms up. Pick the flowers frequently; removing the blooms for bouquets actually encourages the plant to produce even more stems. These are cool-season annuals that will eventually fade once the high heat of mid-summer arrives.
General Growing Tips For Your Seedling Tray
For professional greenhouse production, plant one rooted liner per 4-inch pot or three liners per 10-inch container to create a high-impact retail display. Maintain your media pH between 6.0 and 7.0 and provide a balanced fertilizer feed of 150 to 200 ppm Nitrogen. Sweet peas are cool-weather crops, so keep your daytime temperatures between 55 and 65°F and night temperatures around 45 to 50°F to ensure thick, strong stems. While Mammoth types are "early" bloomers and less day-length sensitive, they still require high light levels to prevent flower bud drop. Avoid excessive heat in the greenhouse, which can lead to stunted growth or premature fading of the crop.
Pinching
You should pinch the plants once they reach about 4 to 6 inches in height to encourage better branching from the base, which leads to a much higher yield of flowers.
Spacing
For professional cut flower production, space your plants 6 to 12 inches apart. Because Mammoth White is a vigorous climber, you must provide mechanical support, such as 6-foot tall netting or a wire trellis, to keep the stems straight and prevent the vines from tangling.
Pests
Keep a close watch for aphids, thrips, and spider mites.
Disease
The most common issues are powdery mildew and botrytis, particularly when humidity is high.
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.
Lathyrus Mammoth White Quick Reference Guide
4 Inch crop time
6-8 Weeks
10 Inch crop time
8-10 Weeks
Color
White
Habit
Upright
Height
5-6 Feet
Light
Full Sun
Minimum Temp
45
Perennial Zone
-
Water Needs
Moderate
Patented Plant
No
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)
4,200
09-28-2026 (Week 40)
4,200
10-05-2026 (Week 41)
4,200
10-12-2026 (Week 42)
4,200
10-19-2026 (Week 43)
4,200
10-26-2026 (Week 44)
4,200
11-02-2026 (Week 45)
4,200
11-09-2026 (Week 46)
4,200
11-16-2026 (Week 47)
4,200
11-23-2026 (Week 48)
4,200
11-30-2026 (Week 49)
4,200
12-07-2026 (Week 50)
4,200
12-14-2026 (Week 51)
4,200
12-21-2026 (Week 52)
4,200
12-28-2026 (Week 53)
4,200
01-04-2027 (Week 01)
4,200
01-11-2027 (Week 02)
4,200
01-18-2027 (Week 03)
4,200
01-25-2027 (Week 04)
4,200
02-01-2027 (Week 05)
4,200
02-08-2027 (Week 06)
4,200
02-15-2027 (Week 07)
4,200
02-22-2027 (Week 08)
4,200
03-01-2027 (Week 09)
4,100
03-08-2027 (Week 10)
4,200
03-15-2027 (Week 11)
4,200
03-22-2027 (Week 12)
4,200
03-29-2027 (Week 13)
4,200
04-05-2027 (Week 14)
4,200
04-12-2027 (Week 15)
4,200
04-19-2027 (Week 16)
4,200
04-26-2027 (Week 17)
0
05-03-2027 (Week 18)
0
05-10-2027 (Week 19)
0
Mammoth White, also known as Lathyrus odoratus, is a vigorous climbing annual with origins in the Mediterranean region. This professional-grade cultivar is part of the "Mammoth" series, which was developed specifically for the cut flower industry to offer earlier blooms, larger flower sizes, and longer, sturdier stems. Reaching a mature height of 60 to 72 inches with the proper support, these plants produce masses of ruffled, pure-white blooms that release an intoxicating, sweet fragrance from late spring through early summer. They perform best in full sun and rich, well-drained soil, making them a staple for vertical garden displays and high-value cut flower production. For a breathtaking spring display, try pairing them with companions like larkspur (Delphinium), snapdragons, or Ammi majus.
Mammoth White Selling Tips
Sell Mammoth White to customers who are looking for premium, high-fragrance cut flowers and vertical interest for their spring gardens. Because the Mammoth series is less sensitive to day length, it allows for earlier spring harvests, giving your customers a head start on the season. Home gardeners will love the romantic look of the pure white vines climbing up fences or trellises, while florists will prize the long stems and excellent vase life for bridal work and spring arrangements. Remind your customers that the more they cut the flowers, the more the plant will bloom, providing them with weeks of fragrant indoor bouquets.
Coach Your Customer Plant in a sunny spot with rich soil as soon as the ground can be worked in the spring, as these plants love the cool weather. Be sure to provide a sturdy trellis, fence, or netting immediately, as these vines will need something to climb as they grow. Keep the soil consistently moist and mulch the base of the plants to keep the roots cool as the weather warms up. Pick the flowers frequently; removing the blooms for bouquets actually encourages the plant to produce even more stems. These are cool-season annuals that will eventually fade once the high heat of mid-summer arrives.
General Growing Tips For Your Seedling Tray
For professional greenhouse production, plant one rooted liner per 4-inch pot or three liners per 10-inch container to create a high-impact retail display. Maintain your media pH between 6.0 and 7.0 and provide a balanced fertilizer feed of 150 to 200 ppm Nitrogen. Sweet peas are cool-weather crops, so keep your daytime temperatures between 55 and 65°F and night temperatures around 45 to 50°F to ensure thick, strong stems. While Mammoth types are "early" bloomers and less day-length sensitive, they still require high light levels to prevent flower bud drop. Avoid excessive heat in the greenhouse, which can lead to stunted growth or premature fading of the crop.
Pinching
You should pinch the plants once they reach about 4 to 6 inches in height to encourage better branching from the base, which leads to a much higher yield of flowers.
Spacing
For professional cut flower production, space your plants 6 to 12 inches apart. Because Mammoth White is a vigorous climber, you must provide mechanical support, such as 6-foot tall netting or a wire trellis, to keep the stems straight and prevent the vines from tangling.
Pests
Keep a close watch for aphids, thrips, and spider mites.
Disease
The most common issues are powdery mildew and botrytis, particularly when humidity is high.
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.
Lathyrus Mammoth White Quick Reference Guide
4 Inch crop time
6-8 Weeks
10 Inch crop time
8-10 Weeks
Color
White
Habit
Upright
Height
5-6 Feet
Light
Full Sun
Minimum Temp
45
Perennial Zone
-
Water Needs
Moderate
Patented Plant
No
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