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Pale Leaves in Water Milfoil

verifiedReviewed by the GreenScout Team

Water Milfoil is a fully submerged aquatic plant with feathery, whorled leaves that create a delicate underwater appearance

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Water Milfoil care requirements

These care conditions are most relevant to pale leaves in Water Milfoil. Check each one as a potential cause.

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Light
Moderate to bright light; 8-10 hours daily. Grows in partial shade but develops better color and density with full light.
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Fertiliser
Add liquid aquatic plant fertilizer bi-weekly during growing season. Nitrogen and micronutrients promote robust growth.
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Water
Fully submerged; thrives in cool to temperate water, 60-75°F (15-24°C). Prefers slightly acidic to neutral pH (6.0-7.5). Tolerates moderate water movement.
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Symptoms to look for in Water Milfoil

  • fiber_manual_recordWashed-out, pale colour
  • fiber_manual_recordYellowing between veins
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Common causes in Water Milfoil

  • fiber_manual_recordIron deficiency
  • fiber_manual_recordMagnesium deficiency
  • fiber_manual_recordToo much direct sun
  • fiber_manual_recordAlkaline soil
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How to diagnose pale leaves in Water Milfoil

Interveinal yellowing on new growth = iron deficiency. On old growth = magnesium deficiency.

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How to treat pale leaves in Water Milfoil

Apply chelated iron or Epsom salt as appropriate. Adjust soil pH.

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Preventing pale leaves in Water Milfoil

Use ericaceous compost for acid-loving plants. Feed with micronutrient fertiliser.

Other Water Milfoil problems