What conditions are needed for a billbergia to achieve excellence in both flowers and foliage?
The leaves of the billbergia are emerald green and glossy, growing in clusters in a rosette shape, and the leaf cylinder can hold water without leaking, which is how it got its name. Around National Day, a columnar bright red inflorescence emerges from the tender green leaf cylinder.
(1) The billbergia likes warmth, humidity and a semi-shaded environment. In spring, summer and autumn, it can be placed indoors in a spot with bright scattered light; in winter, place it near a south-facing window so it receives more sunlight, and it will have lush leaves and brilliant flowers. But in summer, prevent direct strong light, otherwise the leaves easily turn yellow and their ornamental value is reduced. The optimum growth temperature is 20-28°C. When the summer temperature exceeds 30°C, pay attention to ventilation and cooling. The billbergia is not cold-tolerant; in winter the room temperature should be kept at 10-15°C. If the room temperature is higher than 20°C, the plant cannot get sufficient dormancy, which will affect the next year's growth and flowering.
(2) Fertilizing and watering. In the spring and autumn growing seasons, apply a dilute decomposed cake fertilizer solution once every 2 weeks; before flowering in autumn, apply 1-2 additional applications of quick-acting phosphorus fertilizer to make the flower colors more vivid. During the dog days and severe winter, fertilizing should generally be stopped. The billbergia often absorbs water through the scale-like hairs at the base of its tubular water tank, so during the growing period the leaf cylinder must often be filled with water; when water is lacking, the leaves lose their luster and easily turn yellow gradually. But be careful to prevent the water in the cylinder from becoming foul; in summer, tip the flower pot once about every 7 days to let the stale water flow out, then pour in fresh water. The potting soil should be kept moist at all times. In hot summer and dry seasons, spray water frequently to maintain relatively high air humidity; this is an essential condition for good growth of the billbergia. The potting soil should not be too wet; if water accumulates in the pot, it easily causes root rot and leads to the death of the whole plant. In winter the plant enters dormancy and its physiological activity weakens; at this time, watering should be controlled, and it is appropriate to keep the bottom of the leaf cylinder slightly moist.
(3) Choosing pots and soil. The billbergia has an underdeveloped root system, so the pot used for cultivation should not be too large; it is best if it just holds the plant with a little gap. For potting soil, it is advisable to use a culture soil made by mixing leaf mold, garden soil, sandy soil and a small amount of bone meal, evenly mixed and sifted. Old plants that have flowered gradually shrink and dry up. When repotting in spring, the old plant can be cut off to promote new shoots, so the new plant grows robustly and has a good shape.
How can you make a billbergia have both beautiful leaves and flowers?
News from the China Landscape Network on May 8: The billbergia is a famous indoor potted flower valued for both its flowers and leaves. Its leaves are emerald green and full of luster, and when it blooms, a columnar bright red inflorescence emerges from the central cylinder of the leaf cluster, very gorgeous. For potted billbergia, you can choose a culture soil made by evenly mixing and sifting leaf mold, sphagnum moss and garden soil (or coarse sand), plus a small amount of bone meal as base fertilizer. During the growing season, apply a dilute liquid fertilizer about once every half month, and before flowering apply 1-2 additional applications of 0.2% potassium dihydrogen phosphate, and the flower colors will be even more gorgeous. Fertilizing should be stopped during the flowering period, after flowering and during dormancy.
The billbergia often absorbs water through the scale-like hairs at the base of its tubular water tank, so during the growing period the leaf cylinder needs to be filled with water; when water is lacking, the leaves lose their luster and gradually turn yellow. But be careful to prevent the water in the cylinder from becoming foul; generally, tip the flower pot once about every half month to let the stale water flow out, then add fresh water. Usually, the amount of water poured should be based on the surface of the potting soil being dry; when dry, it needs watering.
In summer and dry seasons, spray water frequently to maintain relatively high air humidity. Never allow water to accumulate in the pot, otherwise it easily causes root rot and plant death.
In winter the plant enters dormancy and its life activities slow down. At this time, watering should be controlled, and it is appropriate to keep the bottom of the leaf cylinder slightly moist. The billbergia likes a semi-shaded environment; for home cultivation, placing it indoors in a spot with bright scattered light allows it to grow well. If exposed to direct strong light, the leaves easily turn yellow, affecting ornamental value. The optimum growth temperature is 20°C-28°C. When the midsummer temperature exceeds 30°C, do a good job of ventilation and cooling. In winter the optimum temperature should be kept between 10°C-15°C; at this time, the flower pot should be placed near a south window for care. Using soilless cultivation for billbergia makes it grow and develop even better. For the specific methods of soilless cultivation, see question 25 of this book.
How to cultivate billbergia
Billbergia has leathery leaves; they are emerald green and glossy, arranged in a rosette shape, dignified and beautiful; the leaf bases clasp each other, making the center of the plant form a cylinder that can hold water without leaking, hence the name billbergia. Every year in September, it also sends out a red torch-like inflorescence from the leaf cylinder; red flowers set off by green leaves make it even more lovely, and it is an indoor ornamental flower beautiful in both flower and leaf.
[Propagation methods]
Propagation commonly uses division of offshoots. After a mature plant completes reproductive growth, the old plant gradually shrinks and turns yellow, and finally all the aboveground parts die; the rhizome remains dormant underground and can sprout new shoots the following spring. When the offshoots at the base of the old plant grow to about 10-15 cm, take the plant out of the pot, break off the offshoots by hand, trim the base flat and peel off the leaves near the base, then insert them into sterilized sandy soil. The insertion depth should be just enough to steady the plant body; it must not be too deep, otherwise rooting is slow. The offshoots are tender and fleshy and have no root system, so do not water thoroughly; only spray water on the leaf surface and the surface of the potting soil, keeping the offshoots from wilting. The insertion pot should be placed in a shaded and ventilated place, with the temperature kept at about 20°C, and roots will form in 15-20 days. After flowering it sets fruit, and seeds can be used for propagation. The fruit is a berry, each containing many seeds; fully soft-ripe fruits are rubbed and rinsed in water to obtain the seeds, which must not lose water and are best sown immediately after collection. Sow the seeds densely in a sand tray, keep the temperature above 22°C, and after seedlings emerge, transplant them into containers or plant them in flower pots. Seedlings are averse to strong sunlight and low temperatures; in summer place them in a cool spot, and in winter cover them with film to keep warm. Seedlings need 2-3 years before they can flower.
[Cultivation management]
The billbergia originates from the tropical rainforests of South America. It belongs to the Bromeliaceae as an epiphyte; in its place of origin it grows on tree trunks and rocks, and the tubular center of the plant stores water for use during dry periods. The billbergia likes a warm, humid climate and a semi-shaded environment. The suitable growth temperature is 25°C. It is not cold-tolerant, and the wintering temperature should preferably not be lower than 10°C. It likes well-drained acidic sandy soil. The billbergia is an epiphyte with few roots; when potted, the pot should not be large, nor deep, and it is enough if the plant can be planted with a certain gap around it. For potting soil, it is advisable to use acidic sandy loam rich in humus with good drainage and air permeability, or a culture soil made from peat soil plus a small amount of river sand and base fertilizer. At the same time, fill 1/4 to 1/3 of the bottom of the pot with large particles such as bark and furnace slag. The growing season is from March to October; at this time, ensure sufficient water and relatively high air humidity. In addition to frequently watering the roots, that is, the potting soil, it is also necessary to frequently pour water into the cup-shaped cylinder formed by the leaves, but do not water too much or allow water to accumulate, otherwise it will cause the fleshy roots to rot. Keep the bottom of the leaf cylinder moist so that the scale hairs at the base can absorb water from it. Usually spray water around the plant frequently to maintain relatively high environmental humidity, and often wipe the leaf surface with a soft cloth to keep the leaves clean and bright. During winter dormancy, control watering, and the leaf cylinder should not contain much water either. Be careful to prevent the water in the cylinder from becoming foul; generally, tip the flower pot once about every half month to let the stale water flow out, then add fresh water. And apply a 0.1%-0.2% compound fertilizer solution once every 1-2 weeks. From April to August, apply decomposed organic liquid fertilizer once about every 10 days as a top dressing; stop fertilizing during winter dormancy. In spring, mainly apply nitrogen fertilizer, supplemented by phosphorus and potassium fertilizers. Before the bud and flowering stage, a top dressing of potassium dihydrogen phosphate at a concentration of 0.1%-0.2% can be applied to make the flower colors more gorgeous. During the vigorous growth period (April-August), the temperature should be kept between 20-30°C, and during the flowering period the temperature must not exceed 25°C. In summer, place the potted plant in a shaded, ventilated and cool place, and carry out local cooling. In winter, it should be placed on a warm, sunny south-facing windowsill for cultivation, and the wintering temperature is best controlled at 12-18°C. Too high a room temperature affects the plant's dormancy, resulting in poor flowering the next year, but if the room temperature is lower than 10°C, the plant's root system is easily damaged, the leaves turn yellow, and it may even wither and die. Therefore, both too high and too low temperatures in winter are unfavorable to its growth. The billbergia does not like direct strong light; strong summer sunlight will make its leaves turn yellow. It grows better when placed in bright scattered light. In spring, it can receive light in the morning and evening, and shading is needed around noon and in summer. In spring, summer and autumn, 30%-50% of the midday sunlight all needs to be blocked, while in winter no shading is needed. The wintering temperature is 10-15°C. Repot once a year after flowering, remove the old plant and keep only the new shoots. Using soilless cultivation for billbergia makes it grow and develop even better.