LIFE CYCLE
Annual
PLANT CHARACTERISTICS
Climbing or twining vines
GROWTH HABIT
Vining / climber
BLOOM SEASON
summer
FLAVOUR PROFILE
Ornamental
SUITABLE FOR
Outdoor
SEED TYPE
Flower seeds
PLANT TYPE
Flowering annual vine.
PLANTING SEASON
Spring
PLANT HEIGHT
6–8 ft
FRUIT SIZE
N/A
LIGHT REQUIREMENT
Full sun to partial shade
WATER NEEDS
Moderate
HARDINESS ZONES
USDA Zones 3–9
CONTAINER GARDEN
Yes
PLANT SPACING
6–8 inches
PLANTING DEPTH
1 inch
GROWING CONDITIONS
rich soil
Frequently Asked Questions
Do sweet pea vines need a support structure to grow upright?
Do sweet pea vines need a support structure to grow upright?
Yes the climbing stems require a trellis fence or netting so the plants can twine upward and display their fragrant flower clusters at height
How strong is the fragrance of Lathyrus odoratus blooms?
How strong is the fragrance of Lathyrus odoratus blooms?
The flowers are well known for a sweet distinctive scent that becomes especially noticeable when several plants are grown together near paths or windows
Can the tall vines reach 6–8 feet in a single season?
Can the tall vines reach 6–8 feet in a single season?
In good conditions with support the annual vines typically climb to that height producing successive clusters of colourful blooms through summer
Is soaking the seeds before sowing helpful for faster germination?
Is soaking the seeds before sowing helpful for faster germination?
Soaking for 12–24 hours softens the hard seed coat and often leads to more even sprouting within 10–14 days
Are sweet peas effective as cut flowers for indoor arrangements?
Are sweet peas effective as cut flowers for indoor arrangements?
The long stems and fragrant clusters hold well when cut and bring both colour and scent into the home
Will regular removal of spent blooms extend the flowering period?
Will regular removal of spent blooms extend the flowering period?
Snipping faded flowers encourages the vines to keep producing new clusters rather than setting seed too early in the season