Lathyrus Mammoth Mid Blue, also known as Lathyrus odoratus, is a vigorous climbing annual originally native to the Mediterranean region. This professional-grade cultivar can reach heights of 5 to 7 feet, producing masses of ruffled, clear blue flowers with a powerful, sweet fragrance. These plants perform best in full sun and rich, well-drained soil, blooming from late spring through early summer. They are a staple for high-value cut flower programs and vertical garden displays. For a sophisticated spring arrangement, consider pairing Mid Blue with companions like white snapdragons, Ammi majus, or larkspur.
Mammoth Mid Blue Selling Tips
Sell Mammoth Mid Blue to customers looking for premium fragrance and a head start on their spring vertical gardens. The Mammoth series is highly prized because it is less sensitive to day length, which means earlier harvests and longer, sturdier stems for your customers. Home gardeners will love the romantic look of these clear blue vines climbing up a fence or obelisk, while florists will prize the long stems and exceptional scent for bridal work. Remind your customers that frequent cutting actually encourages more blooms, providing them with weeks of fragrant indoor bouquets.
Coach Your Customer Choose a sunny planting site with rich soil as soon as the ground can be worked in the spring, as these love cool weather. Provide a sturdy trellis, fence, or netting immediately after planting to support the vigorous climbing vines. Keep the soil consistently moist and mulch the base of the plants to keep the roots cool as the weather warms up. Harvest the flowers frequently; removing blooms for bouquets actually stimulates the plant to produce more flowering stems. These are cool-season annuals that will eventually decline once the intense heat of mid-to-late summer arrives.
General Growing Tips For Your Seedling Tray
For professional production, plant one rooted liner per 4-inch pot or three liners per 10-inch container. Maintain a media pH between 6.0 and 7.0 and use a balanced fertilizer feed of 150 to 200 ppm Nitrogen. As a cool-weather crop, sweet peas should be finished with daytime temperatures of 55–65°F and night temperatures around 45–50°F to ensure high flower quality and strong stems. While Mammoth types are earlier bloomers, they still require high light levels to prevent flower bud drop. Finishing time is typically 6 to 8 weeks from transplant for a 4-inch pot and 8 to 10 weeks for a 10-inch container.
Pinching
You should pinch the plants once they reach about 4 to 6 inches in height to encourage better branching from the base, which significantly increases total flower yield.
Spacing
For professional cut flower production, space your plants 6 to 12 inches apart. Because Mammoth Mid Blue 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
Closely monitor your crop for aphids, thrips, and spider mites.
Disease
The most common issues are powdery mildew and botrytis, particularly when humidity levels are 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 Mid Blue Quick Reference Guide
Height
Inch
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)
4,165
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)
0
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
Lathyrus Mammoth Mid Blue, also known as Lathyrus odoratus, is a vigorous climbing annual originally native to the Mediterranean region. This professional-grade cultivar can reach heights of 5 to 7 feet, producing masses of ruffled, clear blue flowers with a powerful, sweet fragrance. These plants perform best in full sun and rich, well-drained soil, blooming from late spring through early summer. They are a staple for high-value cut flower programs and vertical garden displays. For a sophisticated spring arrangement, consider pairing Mid Blue with companions like white snapdragons, Ammi majus, or larkspur.
Mammoth Mid Blue Selling Tips
Sell Mammoth Mid Blue to customers looking for premium fragrance and a head start on their spring vertical gardens. The Mammoth series is highly prized because it is less sensitive to day length, which means earlier harvests and longer, sturdier stems for your customers. Home gardeners will love the romantic look of these clear blue vines climbing up a fence or obelisk, while florists will prize the long stems and exceptional scent for bridal work. Remind your customers that frequent cutting actually encourages more blooms, providing them with weeks of fragrant indoor bouquets.
Coach Your Customer Choose a sunny planting site with rich soil as soon as the ground can be worked in the spring, as these love cool weather. Provide a sturdy trellis, fence, or netting immediately after planting to support the vigorous climbing vines. Keep the soil consistently moist and mulch the base of the plants to keep the roots cool as the weather warms up. Harvest the flowers frequently; removing blooms for bouquets actually stimulates the plant to produce more flowering stems. These are cool-season annuals that will eventually decline once the intense heat of mid-to-late summer arrives.
General Growing Tips For Your Seedling Tray
For professional production, plant one rooted liner per 4-inch pot or three liners per 10-inch container. Maintain a media pH between 6.0 and 7.0 and use a balanced fertilizer feed of 150 to 200 ppm Nitrogen. As a cool-weather crop, sweet peas should be finished with daytime temperatures of 55–65°F and night temperatures around 45–50°F to ensure high flower quality and strong stems. While Mammoth types are earlier bloomers, they still require high light levels to prevent flower bud drop. Finishing time is typically 6 to 8 weeks from transplant for a 4-inch pot and 8 to 10 weeks for a 10-inch container.
Pinching
You should pinch the plants once they reach about 4 to 6 inches in height to encourage better branching from the base, which significantly increases total flower yield.
Spacing
For professional cut flower production, space your plants 6 to 12 inches apart. Because Mammoth Mid Blue 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
Closely monitor your crop for aphids, thrips, and spider mites.
Disease
The most common issues are powdery mildew and botrytis, particularly when humidity levels are 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 Mid Blue Quick Reference Guide
Height
Inch
Patented Plant
No
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