Indian Institute of Spices Research

Package of Practice - Vanilla

Nutrition

However, 40-60 g of nitrogen, 20-30 g of phosphorus and 60-100 g of potash should be given to each vine per year besides organic manures such as vermicompost, oil cakes, poultry manure, wood ash, etc.
Nitrogen can be given as ammonium sulfate, phosphorus as super phosphate and potash as muriate of potash.
Organic manure can be applied during May-June and NPK in 2-3 splits during June-September on the topmost layer of the soil when sufficient moisture is available along with leaf mulch.
As in the case of other orchids, vanilla also responds to foliar feeding. A 1% solution of NPK mixture can be sprayed on the plant once a month. This boostsup growth and flower production.