When to fertilize with blooming fert?

[KC Kam]

Greetings All,

All these while i have been fertilizing only with a balance 21-21-21 fert and have never used any blooming fert. I guess my plants are strong enough to have more blooms now, therefore i would like to start to apply blooming fert.

Anyone can advice when to fert them? Should i apply before they develop buds, when they starts to develop buds or i should just fert them alternately between balance fert and blooming fert?

Is this there any difference in fert timing between cattleya that blooms all year round and dendrobium anosmum that only blooms once a year?

Please advice.


Thanks.