I've had problems with thrips in my glads before too, but dont throw them all away. A few weeks after blooming, lift the bulbs, clean them and dust with a fungiside. Here in Idaho, I store my bulbs indoors during the winter. You may also want to try a pesticide specific to thrips and relocate your glads to another part of the garden.

I have already re-located once. Hmmm
but thank you. i really dont have bug problems until now.
i need to be careful for i have a desert tortoise and cant use pesticides, BUT i can dig them up, treat the bulbs and replant later (when)? I see no problem there, though with people that do have tortoise as a pet, well they are afraid that the tortoise will dig up bulbs. Mine NEVER have even tried. SHE is perfectly content with the food i give her and the few weeds she eats. Thank you so much for the response. I am learning.

one thing that has helped my thrip problem was to establish some wild garlic plants near the gladiolus area. This really helped the glads but chased the thrips over to rose bed. Steve in Baltimore County.

I planted Glad bulbs several months ago and they've been coming up just fine. However, the flower don't quite open and what there is has spots and the petals are very dry. Am I overwatering? Underwatering?