Clivia plants, native to South Africa, thrive in well-draining soil with moderate fertility. Their nutritional requirements are influenced by their growth cycle, which includes active growth (spring-summer) and dormancy (autumn-winter). During active growth, Clivias benefit from balanced macronutrients (nitrogen, phosphorus, potassium) and micronutrients (iron, magnesium, calcium). Organic matter is particularly beneficial for root health and microbial activity in the soil.
Organic fertilizers release nutrients slowly, improving soil structure and promoting long-term plant health. Here are the best options:
2.1 Compost: Rich in organic matter, compost provides a balanced nutrient profile. Mix it into the topsoil or use as mulch to enhance moisture retention.
2.2 Worm Castings: A gentle, nutrient-dense option that improves soil aeration and water retention. Apply as a top dressing or mix into potting soil.
2.3 Fish Emulsion: High in nitrogen, fish emulsion supports leafy growth during the active phase. Dilute with water (1-2 tablespoons per gallon) and apply monthly.
2.4 Bone Meal: A phosphorus-rich fertilizer ideal for promoting root development and flowering. Sprinkle lightly around the base of the plant in early spring.
Synthetic fertilizers offer precise nutrient ratios and faster results but require careful application to avoid over-fertilization.
3.1 Balanced NPK Fertilizer (10-10-10 or 20-20-20): Suitable for general growth, apply every 4-6 weeks during the growing season. Dilute to half strength to prevent root burn.
3.2 Bloom Boosters (Low Nitrogen, High Phosphorus): Formulas like 5-10-10 encourage flowering. Use sparingly in late winter or early spring as buds form.
3.3 Controlled-Release Granules: These provide steady nutrient release over 3-6 months. Ideal for container-grown Clivias to maintain consistent feeding.
Clivias require tailored feeding schedules based on their growth phase:
4.1 Active Growth Phase (Spring-Summer): Fertilize every 4-6 weeks with a balanced or nitrogen-rich formula to support foliage.
4.2 Pre-Flowering Phase (Late Winter): Switch to a phosphorus-rich fertilizer to stimulate bud formation.
4.3 Dormant Phase (Autumn-Winter): Reduce or stop fertilization to allow the plant to rest. Overfeeding during dormancy can lead to weak growth.
5.1 Avoid Over-Fertilization: Excess salts from synthetic fertilizers can damage roots. Flush soil occasionally with water to prevent buildup.
5.2 Soil pH: Clivias prefer slightly acidic to neutral soil (pH 6.0-7.0). Test soil pH annually and adjust with sulfur (to lower pH) or lime (to raise pH) if needed.
5.3 Watering Practices: Always water thoroughly before applying fertilizer to prevent root burn. Ensure proper drainage to avoid waterlogged conditions.
