i usually do fertilize even if they are flowering. i read somewhere that flowering use more energy, thus the fertilizer is much needed. but you may consider not spraying the flowers, coz some people say this may damage them. i just spray everywhere!
After the flowering is over - that's the time when I cut way back for a while on the flowering formula.
Growth formula is given at low concentration, or not at all, for a while after flowering - and then stronger growth formula starting several weeks after the flowering is all over.
Flowering formula is given again after a period of leaf growth. This usually is at least six months after the last flowering period is over.
That's how I do it, anyway. You could search my posts if you're interested to see a couple of recent Vanda success stories of mine.
Congratulations on the great flowers and photo, by the way.
Hi dave,
I fertilize mine the same formula all the time. Vandaceous plants are heavy feeders in general (year round), blooming or not. Every once in a while I actually feed a plant extra during blooming periods, but this is an exception rather than a rule I follow.
Your plant looks very healthy, and I love the color and spotting!