gladiola diseases & how to cure?

Answer 1

Gladiola Disease is a virus and you cannot core only control virus.
They are spread a number of ways, such as week stock, pruning and cutting, and they over winter in crop debris and surrounding weeds. Also they have multiple hosts, Bean Mosaic Virus lives in Beans,clover,GLADIOLUS,freesia, and peas.
The best way to go is to plant virus free corms, it should say on the label, Always wash your hands,tools, and pull all weed.
Try a copper or sulfur fungicide, some times it slows down the virus, never stops it though!
Oh yea, Keep your plants insect free because just like mosquitoes spread human disease, Thrips, Aphids, and White fly , all who have sucking mouth parts, spread plant disease!

Answer 2

Sorry -- here's what I found:

Insects and Disease:
Gladiolas are susceptible to a number of diseases and are prey to pest insects, as well. To minimize problems, always start with sound corms. Toss any that don't look right or feel soft or crumbly. Watch for aphids and thrips which suck sap from leaves, stems and flowers. If found, spray with insecticidal soap or other natural pest control. Glads are host to several virus diseases. Symptoms include spindly, stunted growth, yellow foliage and leaves marked with ring spots, and pale or dead areas. There is no cure once plants are infected; pull and destroy.

So, hope for aphids and such, not virus, huh! Shame -- I love those flowers -- my mom's favorite.