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Plants that fill a similar niche:
Allium Alllium
Solidago nemoralis Solidago nemoralis
Vitis riparia Form

Ludwigia

Common Name(s):

Phonetic Spelling
lood-WIG-ee-uh
Description

Ludwigia is a genus of about 82 species of mostly aquatic plants from various parts of the world. They can be annuals, perennials or subshrubs. They are often used as aquarium plants and have escaped into the wild.

Water Primrose often grows in bogs, ponds and lakes and some are considered noxious weeds as they can quickly take over a pond. The yellow flowers open at dusk and have a long bloom season. They produce many seeds. The stems can grow along the ground and root at the nodes, growing up to 9 feet. 

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#yellow flowers#weed
 
Ludwigia habit
Ludwigia habit J. Neal
Ludwigia stem
Ludwigia stem J. Neal
Ludwigia flower
Ludwigia flower J. Neal
Leaf underside of L. peptides
Leaf underside of L. peptides John Tann CC BY 2.0
Flower of L. octovalvis
Flower of L. octovalvis Tau'olunga CC BY-SA 3.0
L. palustris on water
L. palustris on water Agnieszka Kwiecien' CC BY-SA 4.0
L. repens
L. repens Public Domain Mark 1.0
L. sediodes form
L. sediodes form Vengolis CC BY-SA 4.0
Ludwigia
Flower Form Jim Robbins CC BY-NC-ND 4.0
Ludwigia
Flower and Leaves Jim Robbins CC BY-NC-ND 4.0
Cultivars / Varieties:
Tags:
#yellow flowers#weed
  • Attributes:
    Genus:
    Ludwigia
    Family:
    Onagraceae
    Life Cycle:
    Annual
    Perennial
    Country Or Region Of Origin:
    Europe, Asia, North and South America
  • Whole Plant Traits:
    Plant Type:
    Weed
    Habit/Form:
    Horizontal
    Spreading
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Drainage:
    Frequent Standing Water
    Occasionally Wet
  • Fruit:
    Fruit Type:
    Capsule
    Fruit Description:
    Capsules contain many small seeds
  • Flowers:
    Flower Color:
    Gold/Yellow
    Flower Bloom Time:
    Fall
    Spring
    Summer
    Flower Petals:
    4-5 petals/rays
    Flower Description:
    1/2 inch five-petaled yellow flowers float on the surface or lay on the ground and occur on stems from the leaf axil.
  • Leaves:
    Leaf Color:
    Green
    Red/Burgundy
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Opposite
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Description:
    Lance to egg-shaped leaves. Size varies, up to 6inches long. May or may not have hairs. Can be an opposite or alternate leaf arrangement. Leave color varies from greens to reds.
  • Stem:
    Stem Color:
    Green
    Red/Burgundy
    Stem Is Aromatic:
    No
    Stem Description:
    Stems root at the nodes and are sprawling, fleshy and often reddish. May or may not have hairs.