Euphorbia lactea cristata or Elkhorn is a crested form with intricately undulating fan-shaped branches forming a snaky ridge or crowded cluster. The more common crested form is dark green attractively marked with silver-grey zigzag patterns.
Plant Feed. Once every month during the growing season. Watering. Allow soil to dry between thorough waterings. Avoid overwatering your cactus and limit water during the winter months.