Dwarf Sweet Flag (Acorus gramineus) is an intermediate-level aquarium plant. A grassy, fan-leaved plant that is often sold as an aquarium plant but is really a cool-water bog plant. It can live underwater for a while, but it declines in warm tropical tanks; it suits cool tanks, paludariums or planting with the leaves above water.

Care facts at a glance

Scientific nameAcorus gramineus
FamilyAcoraceae
OriginEast Asia
Height6-10 in
LightMedium
CO2Not needed
PlacementForeground to midground; best emersed or partly out of water
Growth rateSlow
Temperature50-75°F
pH6.0-7.5
DifficultyIntermediate
PropagationDivision

Quick tips

  • Best in cool or unheated tanks.
  • Keep the crown above the substrate.
  • Raise it with its leaves above water for the long term.

San Diego water

Captive-bred stock usually adapts to San Diego tap water with slow acclimation. For best color and health, many keepers blend tap with RO/DI water. Learn the numbers in our San Diego tap water guide.

New to planted tanks? Start with our beginner planted tank guide and the plant fertilizer guide.

Find it at Pet Zone

Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.

Pet Zone Convoy

4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm

Aquascaping, planted tanks

Pet Zone Mid-City

4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm

Monster fish, koi