Plantaginaceae

Hedge Hyssop

Gratiola viscidula

Short stiff leaves that give the stems a spiky look — easy to recognise and unlike anything else at the front of a tank. Trimmed low it turns into a cushion, left alone it stands as a small bush.
Light
medium
Difficulty
medium
Height
3 – 10 cm (1.2 – 3.9 in)
Native rangeRange on the map
  • Alabama
  • Delaware
  • District of Columbia
  • Florida
  • Georgia
  • Kentucky
  • Maryland
  • North Carolina
  • Ohio
  • South Carolina
  • Tennessee
  • Virginia
  • West Virginia

Tank conditions

Leaf colour
green
Plant type
stem plant
Growth rate
slow
CO₂ demand
medium
Tolerates light
medium – high
Placement
midground, foreground
Propagation
cuttings, division +1 cuttings, division, daughter plants
Grows emersed
yes

Care and keeping

Appearance

Narrow pointed leaves set close along thin stems 3–10 cm tall, light green, standing out at angles rather than lying flat. The stems branch readily, so a group looks dense.

Keeping

Moderate demands and slow growth: it wants clean water and good light, and carbon dioxide helps. The slowness is an advantage at the front of the tank — the shape stays where you cut it for a long time.

Placement

The front or middle of the tank. Cut low it becomes a carpet; left alone it makes a rounded cushion.

Propagation

By cuttings: cut a shoot and plant it. Dense clumps can be pulled apart.

Cultivars

The same plant with a different look: light, water and care are shared with the species.

Other varieties: Gratiola viscidula 1 2 GROW

Scientific and other names, conservation status

Other scientific names
Gratiola anagallis, Gratiola shortii, Gratiola virginica, Gratiola viscidula shortii, Gratiola viscidula typica, Gratiola viscidula viscidula, Gratiola viscosa, Gratiola viscosa drummondii
Gratiola viscidula
Pennell