Osmocote extended release fertiliser granules

[SouthPark]

It's a choice for sure. If it doesn't create any issues, and consistently works well for particular growers for very long times, then I say stick with it.

I have lots of osmocote too - but I only use it for my regular garden plants and pot plants.

For my own orchids ----- I prefer once-a-month application of weak fertliser on the first day of each month (and mag-cal at 2 weeks into each month).

Manual control for fertiliser and mag-cal has worked really well for me for very long times.

[WaterWitchin]

And thanks for proper spelling. Saw that, and too lazy to correct.