Lathyrus Species, Sweet Pea

Lathyrusodoratus

Family
Fabaceae (fab-AY-see-ee)
Genus
Lathyrus (LAY-thy-russ)
Species
odoratus (oh-dor-AY-tus)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
4-6 ft. (1.2-1.8 m)
Spacing
6-9 in. (15-22 cm)
Hardiness
Not Applicable
Danger
Seed is poisonous if ingested
All parts of plant are poisonous if ingested
Bloom Color
Pink
Rose/Mauve
Red
Dark Blue
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Annuals
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
Scarify seed before sowing
Seed Collecting
Collect seedhead/pod when flowers fade; allow to dry
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Chula Vista, California

Elk Grove, California

Eureka, California

JACUMBA, California

Modesto, California

Novato, California

Oak View, California

Richmond, California

Evergreen, Colorado

Keystone Heights, Florida

Kissimmee, Florida

Tampa, Florida

Stone Mountain, Georgia

Aurora, Illinois

Mackinaw, Illinois

Nabb, Indiana

Metairie, Louisiana

Marlborough, Massachusetts

North Billerica, Massachusetts

Revere, Massachusetts

Springfield, Massachusetts

Atlantic Mine, Michigan

Dearborn, Michigan

Howell, Michigan

Owosso, Michigan

Perryville, Missouri

West Lebanon, New Hampshire

La Grande, Oregon

Greensburg, Pennsylvania

Lancaster, Pennsylvania

Crossville, Tennessee

Conroe, Texas

Jacksonville, Texas

Ogden, Utah

Falls Church, Virginia

Kalama, Washington

Seattle, Washington

South Hill, Washington

show all

Featured Videos

Gardener's Notes:

12
positives
4
neutrals
3
negatives
Sort By:
Sort By:
A
Tampa, FL | October 2022 | positive

Here in Tampa its best to grow winter blooming types. I just started my seeds in mid September indoors under lights, and will plant out o...Read More

I
(Zone 11) | June 2015 | negative

Beware! Not a single BEWARE! message?! What is wrong with you sheeple? You are not aware of chemtrails yet you call this average poisonou...Read More

M
M
Shreveport, LA | August 2010 | positive

Last fall I ordered seed from Renees Garden and had good success. However is gets hot so quickly in my area I did not to enjoy the flowe...Read More

M
La Grande, OR (Zone 4b) | August 2010 | positive

This spring in NE Oregon was the wettest on record. I had started my Sweet Peas in the greenhouse. Because of muddy conditions I postpone...Read More

Y
Atlantic Mine, MI | May 2010 | neutral

Sweet peas grow like crazy in my yard. They're nice, because the bloom after everything else is done, and bloom for a long period of tim...Read More

M
M
North Billerica, MA | July 2009 | positive

For a few years I've been trying to grow this plant with little luck.... finally this year i started with better seed from a better deale...Read More

T
Hilliard, OH (Zone 6b) | December 2007 | positive

grows wild here. self seeds. its tells me when summer is really here. i love it!

R
Metairie, LA | April 2007 | positive

Planted seeds last oct. but was unable to find inoculant. Bought some earthworm castings and dug it in the trench...the vines are 8 feet ...Read More

I
Falls Church, VA (Zone 7a) | September 2006 | neutral

My sweet pea is indoors here in VA. I grow her in my apartment. She is doing ok, but I think I under watered her and she began to shrivel...Read More

R
Chula Vista, CA (Zone 8a) | October 2005 | positive

I've had very good luck with this plant, both with commercial seed packets and with seeds harvested from the plants. I have grown them in...Read More

K
K
Kissimmee, FL (Zone 9b) | June 2005 | positive

We grow sweet peas here in Florida when the weather is cooler, from late fall through early spring. The scent of the flowers is probably...Read More

N
Sparks, NV (Zone 7a) | May 2005 | neutral

I haven't had much luck with sweet peas...yet. I haven't had the conditions they prefer. My rich, cool soil is in a shady part of the g...Read More

M
Conroe, TX (Zone 9a) | May 2005 | positive

In TX this is considered a cool-season annual, which means we have to plant it in the fall to enjoy it just as winter breaks. I tried it ...Read More

D
Saskatoon, SK (Zone 3a) | May 2005 | negative

These vines do not like hot and windy sites. I had them in a container on my south-facing patio. They grew for a while but then dried o...Read More

L
Ogden, UT (Zone 5b) | January 2005 | positive

Here in zone 5, I sow sweet peas in late fall (early November). This allows the seeds to begin the germination process, but they don't p...Read More

K
Modesto, CA (Zone 8b) | January 2004 | positive

Ahh..my favorite flower! Hopflower, you are a BOUNTY of information for this plant! Butterflydust, I believe your problem may lay in wh...Read More

B
Riverside, CA | January 2004 | negative

I have problems with growing them anywhere in my yard. I had them lightly tied to a trelis in full sun, partial shade, full shade. They d...Read More

H
Santa Rosa, CA (Zone 9a) | December 2002 | positive

I raise sweet peas almost exclusively. The seeds are indeed toxic, as is the whole plant if eaten in any quantity. The word lathyrus in p...Read More

S
Oklahoma City, OK (Zone 7a) | August 2002 | neutral

From the Successful Gardening book...."The sweet pea likes coolness, but needs some direct sunlight. Wind can damage the fragile tendril...Read More

Featured
Damselfly
(Argia apicalis)
Cactus Wren
(Campylorhynchus brunneicapillus)
Featured
Damselfly
(Argia apicalis)
Cactus Wren
(Campylorhynchus brunneicapillus)