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Plant guide

Water forget-me-not.

Myosotis scorpioides

Pronounced my-oh-SO-tis skor-pee-OY-deez

Also known as Common Water Forget-Me-Not, European forget-me-not, Forget-me-not, Forget-me-not Water

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water forget-me-not
Photo by Patrick Hacker (CC BY) via iNaturalist

This charming perennial loves damp spots and brings a splash of blue to your garden. It thrives near water and spreads easily to form lovely mats of color. You will find it is a classic choice for bog gardens or pond edges.

Another photo of Water forget-me-not
Photo by Mark Apgar (CC BY) via iNaturalist

At a glance

Care level
Easy
Plant type
Perennial
Light
Full sun to partial shade
Indoor light
Bright indirect
Water
Every 1 to 3 days
Mature size
1 to 2 feet
Growth rate
Fast
Hardiness
USDA 3 to 9
Bloom time
Late spring to late summer

Care

Keep the soil consistently moist or even submerged in shallow water. Watch for wilting if the soil dries out too much. Trim back after flowering to encourage a second flush of blooms.

Watering
Keep the soil constantly damp as this plant dislikes drying out.
Feeding
Apply a balanced liquid fertilizer during the active growing season.
Pruning
Cut back stems after flowering to keep the plant tidy and encourage new growth.
Repotting
Repot when the plant becomes root bound or outgrows its container.
Soil
Moist to wet soil
Soil pH
Neutral to slightly acidic
Temperature
-20 to 30°C
Humidity
60 to 90%
Drought tolerance
Low
Lifespan
Perennial, typically 3 to 5 years.
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of the drainage holes
  • Stunted growth
  • Soil drying out too quickly

Safety

People
The plant contains pyrrolizidine alkaloids which can be harmful to the liver if consumed in large amounts over time.
Children
Keep away from small children as ingestion of the foliage can cause digestive distress.
Contact allergens
Some individuals may experience mild skin irritation from handling the foliage.
Airborne allergens
The pollen is not considered a significant allergen.
Edibility
While not highly toxic, it is not considered edible and may cause stomach upset if ingested in quantity.

How to identify it

  • Small sky blue flowers with yellow centers
  • Soft hairy lance shaped leaves
  • Stems that often creep along ground
  • Flowers arranged in coiled clusters
Height
0.15 to 0.4m
Spread
0.2 to 0.6m
Leaves
bright green, semi-evergreen
Flowers
blue, yellow, 0.5 to 1cm
Fruit
brown, late summer

Problems to watch for

  • Powdery mildew · A white fungal growth on leaves often caused by poor air circulation or dry soil.
  • Aphids · Small insects that cluster on new growth and suck plant sap.

Check your water forget-me-not from a photo

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Growing it

Propagation
division, seed, cuttings
When to plant
spring, autumn
Overwintering
In cold climates, the foliage may die back to the ground. Simply clear away dead debris in early spring to make room for new growth.
In containers
It grows well in containers placed in shallow water or kept very moist, using a minimum 20 cm pot.

Division

  1. 1. Dig up a clump in early spring.
  2. 2. Gently pull the root mass apart into smaller sections.
  3. 3. Replant immediately in moist soil.

Group this plant with others that love wet feet to create a lush, low maintenance bog garden.

Grows well with

  • Marsh Marigold · They share similar requirements for wet, boggy soil conditions.
  • Yellow Flag Iris · This provides a nice height contrast in a pond side planting.

Similar species

Science

Family
Boraginaceae
Genus
Myosotis
Order
Boraginales
Class
Magnoliopsida
Native range
Europe and parts of Asia.
Conservation
Not of conservation concern.

It grows along stream banks and in wetlands, using its creeping stems to colonize damp ground.

Value to wildlife
nectar source, larval host plant
Pollinators
bees, butterflies
Uses
bog garden plant, pond edge filler, ground cover, pollinator garden

Through the year

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Flowering
Fruiting
Foliage

Ecological indicators

Salinity
1/9
Soil reaction
6/9
Light
5/9
Temperature
5/9
Moisture
8/9
Nutrients
5/9

Taxonomy resolved against GBIF.

Questions people ask

Can I grow this in a normal garden bed?
Yes, as long as the soil remains consistently moist and does not dry out.
Does it need full sun?
It prefers partial shade but will tolerate full sun if the soil stays wet.

Where the name comes from

Myosotis comes from Greek for mouse ear, describing the leaf shape, while scorpioides refers to the coiled flower spike.

Good to know

  • It is often called water forget me not.
  • The flowers have a tiny yellow eye in the center.
  • It spreads readily by creeping stems that root at the nodes.
  • It thrives in shallow water or very damp soil.

Keep your water forget-me-not growing

This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.