Dendrobium griffithianum Care Tips?

[mgxoxo]

Hi! New orchid grower here. Picked up a Dendrobium griffithianum when a breeder came into town. Any tips for successful growth? Mainly wondering if my potting mixture is suitable (perlite, orchid bark, and SunGro Black Gold All Purpose Natural Potting Soil Fertilizer Mix 0.13-0.04-0.13), about watering frequency and quantity, if the potting space is okay, and if I should place a humidifier near it.

Here are notes I’ve taken for how-to care so far: 


Dendrobium griffithianum Care

Water:
-Water in morning ~1-2x per week. Allow potting medium and roots to be almost dry between waterings.
-Use distilled water or rainwater.
-Leaf drop indicates a need for more water, humidity, and warmer temperatures. Begin decreasing water for winter rest after blooming. Do not allow pseudobulbs to shrivel. Increase water again in spring when new growth appears.

Potting Medium:
-Mix of perlite, orchid bark, and SunGro Black Gold All Purpose Natural Potting Soil Fertilizer Mix (0.13-0.04-0.13)

Placement:
-On slightly shaded south facing windowsill.
-The pot that is used should only be slightly bigger than the plant’s root ball.
=Keep in mind that temperatures close to the window on a windowsill will be colder or hotter than your general house temperature.

Fertilizer:
-When new roots begin to grow, apply a high nitrogen fertilizer (9-3-6) in spring and a high phosphate fertilizer (3-12-6) from late summer to fall. liquid fertilizer three out of four weeks. On the fourth week, flood potting media to rinse fertilizer salts.

Humidity:
-75% humidity is ideal with 65% in winter. Use a humidifier if necessary and a fan set to low to provide air movement. Home growers: remember 50% is the maximum recommendation.

Sources:
-https://gardens.si.edu/collections/plants/orchids/orchid-care-sheets/dendrobium/#:~:text=Since%20Dendrobiums%20are%20often%20large ,in%20the%20spring%20and%20summer.
-https://www.aos.org/orchids/culture-sheets/novice-dendrobium.aspx
-https://www.thespruce.com/grow-cane-and-dendrobium-orchids-1902862

Thanks!