Causes of and Solutions for Clivia Flower Stalk Getting Stuck

Unsuitable temperature: The optimum growing temperature for Clivia is 15-25°C; below 15°C it grows poorly. Especially before the stalk emerges, if the temperature does not reach above 15°C, the flower stalk will struggle to push out. Before Clivia blooms, you should frequently check the bulb of the potted plant for any bulging marks; once found, it indicates the stalk may be about to shoot, and the temperature should be adjusted promptly to help the flower stalk emerge.

Insufficient temperature difference: Clivia's growing habit favors a large day-night temperature difference. If the temperature difference is small, the stalk will struggle to emerge. After flower bud differentiation and before the stalk shoots, the temperature should be kept at around 10°C, which makes shooting easier; otherwise, the stalk-stuck phenomenon will occur.

Insufficient fertilization is another cause of the stalk getting stuck. In autumn the plant enters the reproductive growth stage and its fertilizer demand grows larger and larger; if fertilizer is insufficient at this time, stalk emergence is very likely to be affected. After Clivia has been grown for 3 years, the number of fertilizer applications must be increased once autumn arrives. It is best to apply liquid fertilizer with a higher phosphorus content, and alternating nitrogen, phosphorus and potassium is preferable; when necessary, a 0.2% potassium dihydrogen phosphate foliar fertilizer can be added to promote flower bud formation and earlier blooming.

Improper watering: When Clivia shoots its stalk, a lack of water can also hinder flower stalk growth and lead to the stalk getting stuck. Generally, when the stalk is shooting, increase the amount of watering and keep the potting soil moist; do not wait until it is completely dry before watering, otherwise the bulb and leaves will suffer from water shortage, blocking the plant's physiological activities and causing the stalk to get stuck and affecting blooming.

Excessive bulb pressure: When the plant shifts into reproductive growth, pay frequent attention to changes in the bulb. If the bulb bulges and one side becomes enlarged, it means the flower stalk is developing; at this point, stop fertilizing for 2 weeks, otherwise the leaf sheath and bulb will become even harder and the pressure greater. If the stalk is stuck due to excessive bulb pressure, use a sharp knife to cut open the leaf sheath clamping the stalk by 1.5 cm, to reduce the pressure of the leaf sheath base on the stalk and encourage the stalk to emerge.

Causes of and solutions for Clivia flower stalk getting stuck:

1. Adjust fertilizer: When autumn comes, Clivia shifts into the reproductive growth stage and its fertilizer demand increases; if fertilization is improper, it is not conducive to stalk emergence. Therefore, pay attention to adjusting fertilizer. Generally, after Clivia has been grown for a full 3 years, the number of fertilizer applications must be increased in autumn; it is best to use liquid fertilizer with a higher phosphorus content, and when necessary, also add 20% potassium dihydrogen phosphate to promote flower bud differentiation and formation, rapid stalk shooting and earlier blooming.

2. Adjust water: Water enables the Clivia plant to maintain its normal posture; only when the cells and tissues in its body contain sufficient water can it carry out normal physiological activities. If Clivia lacks water, it cannot shoot its stalk and bloom, and the leaves will become shriveled, withered, drooping and curled. Therefore, when the stalk is shooting, you should break the conventional watering method of watering when wet and dry, and appropriately increase the amount of watering; never let the potting soil dry out completely, otherwise the stalk will get stuck and blooming will be affected.

3. Adjust temperature: The optimum growing temperature for Clivia is 15°C-25°C; below 15°C, it is very difficult for the stalk to emerge and bloom. If you find the pseudobulb of Clivia bulging and the newly grown leaves showing stalk tracks (referring to the marks left when the newly grown leaves are squeezed by the flower stalk after Clivia's flower bud differentiation and the beginning of flower stalk emergence), this is a sign that the stalk is about to shoot; at this point you should pay attention to adjusting the temperature, bringing it to 25°C during the day and keeping it at 15°C at night, so that a 10°C temperature difference is maintained and shooting becomes relatively easy.

4. Reduce pressure: Because the pressure of the leaf sheath and pseudobulb is too great, the flower stalk is clamped inside and cannot shoot out; this is another cause of the stalk getting stuck. If this happens, you can use a sterilized razor blade to cut open the leaf sheath clamping the stalk by 1.5 cm, relaxing the pressure of the leaf sheath base on the stalk and encouraging the stalk to shoot out.