How to Grow Clivia? Detailed Guide to Cultivation Methods and Precautions
Clivia is native to southern South Africa and is a perennial herbaceous plant. Its flowering period lasts 30-50 days, mainly in winter and spring, and it also blooms around New Year's Day to the Spring Festival. It dislikes strong light and is a semi-shade plant. It prefers cool conditions and dislikes high temperatures. The optimal growth temperature is 15-25°C, and growth stops below 5°C. It prefers fertile, well-draining soil and moist soil, and dislikes dry environments. It has high ornamental value. In China, it is often grown in pots in greenhouses for ornamental purposes. Let's take a look below at what the cultivation methods and precautions for Clivia are!
Cultivation Methods for Clivia
1. Soil: Clivia is suitable for soil rich in humus. This kind of soil has good aeration, good water permeability, and is fertile with a slightly acidic nature (pH6.5). The general soil mix for Clivia is 6 parts leaf mold, 2 parts pine needles, 1 part river sand or furnace ash residue, and 1 part base fertilizer (hemp seed, etc.). Leaf mold mainly refers to oak leaves, also called oak tree. This kind of leaf is thick in texture and is very good humus. It is nutritious and has good water permeability. Other leaves are too thin and disappear after decomposition, so they cannot be mixed with other media to make soil. When cultivating, the pot size should gradually increase as the plant grows. When cultivating one-year-old seedlings, a 3-inch pot is suitable. In the second year, switch to a 5-inch pot, and afterward repot into a pot one size larger every 1-2 years. Repotting can be done in spring and autumn.
2. Light: Clivia is a plant that likes moisture and is suitable for growing in high-humidity environments, but it does not have high light requirements. As long as the temperature is suitable, it does not matter whether the light duration is a little longer or shorter. Although good light can ensure the bright color of Clivia flowers, it still prefers slightly weaker light, so strong light must be avoided.
3. Repotting: When Clivia grows larger, it needs a bigger pot, which is “repotting and changing soil.” The best time to change soil is in spring and autumn, because Clivia grows vigorously at this time and will not be affected by the soil change. The most critical point when changing soil is to firm the soil around the roots. Otherwise, if there is no soil around the roots, water and nutrients will not reach the roots, easily causing root rot.
4. Watering: Clivia has relatively well-developed fleshy roots, and the roots store a certain amount of water, so this flower is relatively drought-tolerant. However, even drought-tolerant flowers cannot be severely short of water, especially in summer when high temperatures are combined with dry air. Do not forget to water promptly, otherwise the roots and leaves of the flower will be damaged, causing new leaves to fail to sprout and the original leaves to scorch. This not only affects flowering but may even cause the plant to die. However, too much watering can also cause root rot. Therefore, it must be well controlled. Always pay attention to the dryness and moisture of the potting soil. When it becomes semi-dry, water once, but the amount should not be too much. Keeping the potting soil moist but not soggy is just right.
5. Fertilizing: Many flowers like fertilizer, but fertilizing fertilizer-loving flowers also has a limit. Too much fertilizer is unfavorable for growth and may even cause root rot or scorching of the plant. Clivia also belongs to this type of plant, and fertilizer must be applied in appropriate amounts. Flowers have different nutrient requirements at different stages of growth and development. Therefore, different fertilizing methods suitable for the plant's needs should be adopted at each stage. Examples include base fertilizer, top dressing, and foliar fertilization.
① Base fertilizer (also called basal fertilizer): The purpose is to create conditions for plant growth and development and meet its nutrient needs. Base fertilizer for Clivia should be applied when repotting every 2 years. Commonly used fertilizers incorporated into the soil include barnyard manure (that is, poultry and livestock manure), compost, green manure, and soybean cake fertilizer.
② Top dressing: Mainly to promote plant growth. Clivia can be given fertilizers such as cake fertilizer, fish meal, and bone meal. Apply less at initial planting, and later as the plant grows larger and the leaves increase, the amount of fertilizer should gradually increase. When fertilizing, scrape open the potting soil and apply it 2-3 cm deep into the soil, but note that the fertilizer applied should not be too close to the root system to avoid burning the roots. Applying this kind of solid fertilizer once a month is generally enough; it should not be more frequent.
③ Applying liquid fertilizer as top dressing: Applying liquid fertilizer as top dressing means diluting the fermented clear supernatant liquid of soaked animal and plant materials with 30-40 times clear water and then pouring it onto the potting soil. For small seedlings, dilute with 40 times water; for medium seedlings, dilute with 30 times water; for large seedlings, only 20 times water is needed. After applying the fertilizer liquid, water once with clear water 1-2 days later (the amount of water should not be too much), so that the fertilizer penetrates to the roots in the potting soil and fully exerts its fertilizing effect. Do not water 1-2 days before applying liquid fertilizer; let the potting soil be relatively dry before applying the fertilizer liquid, which is more effective. The best time to fertilize is early morning; when applying, pour the fertilizer liquid along the edge of the pot, and be careful to avoid applying it on the plant and leaves. In addition, the type of fertilizer should also vary according to the season. For example, in spring and winter, it is suitable to apply some phosphorus and potassium fertilizers, such as fish meal, bone meal, and hemp cake, which help leaf vein formation and improve leaf glossiness; in autumn, it is suitable to apply the leachate of decomposed animal hair, horns, hooves, or soybean cake, diluted with 30-40 times clear water before application, to promote leaf growth.
④ Foliar top dressing: Fertilizing by this method is mainly to make up for the lack of nutrients in the soil, solve the problem of nutrient deficiency in the plant, and make seedlings grow faster and flowers and fruits grow larger. Foliar fertilization is spraying the diluted fertilizer directly onto the leaf surface of the plant with a mist sprayer, allowing nutrient elements to penetrate the leaf tissue through epidermal cells and stomata and then be transported throughout the plant. Commonly used fertilizer types include urea, monopotassium phosphate, and superphosphate. When spraying, spray evenly on both the front and back sides of the leaves. During the growing season, spray once every 4-6 days; during semi-dormancy, spray once every 2 weeks. Generally, spray after sunrise. After the plant blooms, spraying should be stopped. It must be noted that this method can only be used when the plant is found to be deficient in fertilizer. If the plant has sufficient nutrition and is growing vigorously, it should not be used.
Later-Stage Management of Clivia Cultivation
The flowering period of Clivia is generally from February to April. After flowering, the flowering period can be extended by appropriately lowering the temperature, improving ventilation, and reducing light. The length of the Clivia flowering period can be controlled through people's cultivation techniques.
1. Fertilizing: Apply once more bone meal, well-fermented fish internal organs, and soybean cake water, which can make the flower color vivid, the flowers larger, and the leaves thicker. Otherwise, it is prone to small flowers, few in number, and pale flower color. At the same time, care should be taken to avoid excessive nitrogen fertilizer and insufficient phosphorus and potassium fertilizer, which can lead to weak growth or leggy leaves and affect bud formation and flowering.
2. Light: A certain amount of light should be provided to meet the light requirements for photosynthesis and flowering. Under strong light, the flowering period is short and the flower color is vivid; under weak light, the flower color is pale. Too much or too strong light, or long-term shading with insufficient light, will affect nutrient production and accumulation, making it unable to form buds and bloom.
3. Temperature: Suitable temperature has a clear effect on the quality of flowering. If the temperature is too high, root hairs exist for a very short time, and the function of absorbing water and fertilizer is greatly reduced, causing Clivia to enter a semi-dormant state; if the temperature is below 10°C, growth will also be inhibited; during the growing period, it should be controlled at 15-25°C, and during the flowering period it should be 15-20°C. When root hairs exist for a long time and the function of absorbing water and fertilizer is good, the leaves grow short and wide, and the flowering vigor is lush. It should also be noted that Clivia needs a temperature difference of about 8°C between day and night, because the organic matter it produces under higher daytime temperatures needs to be stored and digested under lower nighttime temperatures.
4. Water: Clivia must not lack water throughout the plant's growth period. Entering the flowering period, the water requirement is even greater, and the growing humidity should not be lower than 60%.