Saturday, May 25, 2019

Den. Ueang Pheung (Den. jenkinsii x Den. aggregatum) cultural notes

This hybrid is the product of the cross of two similar especies.  The species are so similar that some consider them the same species.  Dendrobium (aggregatum) lyndleyi produces long inflorescences of yellow flowers.  Dendrobium jenkinsii produces one or two flowered inflorescences of relatively large flowers that can rival the size of the cane that produced them.  The culture for both species is identical.   I decided to grow this plant in a wire basket instead of the usual tree fern trunk due to the fact that the warm and wet weather of my locality tends to speed the bacterial decay tree fern to such an extent that in a few years. if it is subjected to a steady stream of fertilizer, it becomes soft and begins to break down.  

The only differences I have noted between the hybrid and the species Dendrobium lydleyi is that the species needs a stronger, longer exposure to the sun to bloom well.  And that the species will sometimes bloom poorly if it is watered during the coldest driest part of the year.


Light: Bright light, a few hours of full sun in the morning, but the plants are protected from the midday sun.  The rest of the day it is shaded by trees. 

Temperature:  In my climate, the temperatures are the lowest in February when they go down to 14 C.  From June to October the high temperatures are 32 C.  The plant grows well in this range.

Watering: The plant is watered every three to two days, when the basket is approaching dryness.  It is only watered in the dry season, the rest of the year the local rain pattern gives it enough water to sustain growth.

Fertilizer:  It is given a 20-20-20 fertilizer but only if it is showing new growths.  When the plant starts a growth cycle, a small quantity of manure is put over the potting material.

Potting:  In a wire basket, in medium bark.  

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