Vanda markings

[estación seca]

Vanda roots aren't burned by high concentrations. Martin Motes of Motes Orchids, Vanda specialist, writes of using 20-20-20 or MSU at 1 Tablespoon (15 ml of powder) per gallon (3.78 liters) at every fifth watering.

He says proper fertilizing leads to a zone of pale green new growth at the base of the emerging leaf that is 1cm wide. If this band is narrower fertilizer should be increased. If wider than a cm, decreased.