Mint

Mentha spp.

Mint is a vigorous hydroponic herb that roots easily, grows quickly, and suits NFT, raft, ebb-and-flow, or drip systems, but it should be contained and.

Identification

  • Growth habit: Fast-growing perennial herb with spreading stems and nodes that root easily.
  • Leaves: Opposite aromatic leaves, often toothed and slightly textured.
  • Stems: Square stems typical of the mint family; runners may spread quickly.
  • Aroma: Distinct cooling mint aroma, varying by species and cultivar.

Edible Parts

  • Leaves: Harvest young leaves and shoot tips often to encourage compact growth.
  • Tender stems: Young stems can be used; older stems may be fibrous.

Propagation

  • Stem cuttings: Mint roots very easily from cuttings placed in clean water or moist substrate.
  • Division: Rooted runners or clumps can be divided and replanted.

Cultivation

  • Nutrient film technique: Grows rapidly but roots and runners must be controlled.
  • Deep water culture: Works well with strong aeration and regular pruning.
  • Drip irrigation with inert media: Good for containing plants in separate pots or bags.

Lookalikes

  • Basil: Also has opposite leaves and square stems, but aroma is sweet and clove-like rather than minty.
  • Oregano: Related aromatic herb with smaller leaves and woody growth.

Growing Parameters

ParameterRangeOptimalUnit
pH5.5 - 7.05.8 - 6.5pH
Electrical conductivity1.2 - 2.21.4 - 1.8mS/cm
Air temperature15 - 2818 - 24°C
Daily light integral10 - 2012 - 16mol/m²/day