Sarcochilus hartmannii care and culture

Sarcochilus hartmannii is native to Australia. They grow in the northeast of New South Wales, and in a very limited area along the East Coast near Gympie in the south east of Queensland and south to the Hastings River...

 Sarcochilus hartmannii also called as Hartman's Sarcochilus, The Large Boulder Orchid, Sarcochilus rubricentrum, Thrixspermum hartmannii, Thrixspermum rubrocentrum, is a species of the genus Sarcochilus. This species was described by Ferdinand von Mueller in 1874.

IDENTIFY SARCOCHILUS HARTMANNII

 Sarcochilus hartmannii is native to Australia. They grow in the northeast of New South Wales, and in a very limited area along the East Coast near Gympie in the south east of Queensland and south to the Hastings River. They grow almost exclusively as rock orchids (lithophytes) at moderate heights of about 1000 m, usually on exposed stands on boulders or cliff walls near streams where branching plants form a dense layer with roots delving into hollows filled with humus.

© aaoe

 It is a small to medium sized, cool to hot growing, lithophytic and sometimes epiphytic species, which reaching up to 50 cm in height, with numerous, stout, erect stems carrying 6 to 8, thick, fleshy, oblong-lanceolate, falcate, obliquely emarginate or acute, 20 cm long leaves.

 The Large Boulder Orchid blooms on a erect to arcuate, reddish, axillary, 6 to 25 cm long, up to 25 flowered inflorescence that is longer than the leaves, occurring in the spring and has non-fragrant flowers. The flowers are 1-3 cm in diameter. The flowers are fully open with wide flakes of both whorls that almost overlap. They are shiny white, usually have reddish dots in the center of the flower, but some of the maples are completely white. The lip is small and its side plots have red stripes and a yellow color. Although the flowers of Sarcochilus species are not considered permanent, the flowers of this species may stay in good condition for several weeks, especially if kept cold and with less light.

SARCOCHILUS HARTMANNII CARE AND CULTURE

 Cultural information should only be used as a guide, and should be to be adapted to suit you. Your physical location; where you grow your plants, how much time you have to devote to their care, and many other factors, will need to be taken into account. Only then can you decide on the cultural methods that best suit you and your plants.

Light:

 Sarcochilus hartmannii needs a light level of 20000-30000 lux. The light should be kept as high as possible, which the plants are able to bear, as long as they do not lead to leaf burns. However, it should be remembered that with a high level of light it is very important to ensure strong air movement and relatively high humidity to prevent sunburn of the leaf tissue.

© Arne and Bent Larsen | CC BY-SA 2.5 DK

Temperature:

 It is a plant with moderate heat requirements, but requiring cool nights at rest. The average summer temperature is 26 ° C at day and 16-17 ° C at night, giving a daily amplitude of 9-10 ° C. In winter, the average daytime temperatures are 16-21 ° C and the night 6-9 ° C, with a daily amplitude of 11-12 ° C.

Humidity:

 The Large Boulder Orchid needs the humidity of about 60-65% throughout the year.

Substrate, growing media and repotting:

 Baskets, shallow containers or baskets for planting bulbs filled with a thick, loose, quickly drying ground are best suited for cultivation. However, some breeders recommend deep containers with loose substrates, such as sandstone, brick or bark with the addition of a small amount of moss or leaf soil. Sarcochilus hartmannii can also be mounted on rootstocks if we can provide them with high humidity and watering at least once a day during the summer. In the case of such suspended plants, during the dry and hot periods it may be necessary to water several times a day. The roots should be kept cool and wet, but not always wet.

Watering:

 In the summer and early autumn, the precipitation is moderate to heavy. Their quantity then slightly decreases from late autumn until the next spring, but it is not a real drought. During the growing period, the cultivated plants should only slightly dry before the next watering. Some breeders recommend watering only with rainwater, but this is probably only important in areas where the tap water is highly mineralized.

© Averater | CC BY-SA 3.0

Fertilizer:

 The plants should be fertilized every week 1/4-1/2 of the recommended dose of fertilizer for orchids. A fertilizer with a high nitrogen content is beneficial from spring to mid-summer, and a phosphorus-rich fertilizer can be used in late summer and autumn. To avoid the accumulation of mineral deposits during periods of strong fertilization, it is recommended to rinse the substrate every few weeks. Rinsing is particularly important where the water is highly mineralized. First, normally, the plant should be watered to dissolve the accumulated salts, and after about an hour, rinse the substrate with water equal to twice the volume of the container.

Rest period:

 In winter, watering and fertilization should be significantly reduced. From the middle of autumn until the emergence of new growths in spring, the Sarcochilus hartmannii should be watered every 2-3 weeks, and in the meantime, especially in sunny weather, the plants can be fogged in the early morning. Whenever the amount of water decreases, the fertilization must also be reduced or eliminated.

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