Q.Vegetable Truggs
For the last two years most of my trug vegetables have long thin roots which have never filled out Why is this so.
Certified GKH Gardening Expert
Unfortunately, this can have many causes. Poor soil quality, over and underwatering, not enough light, insect damage, disease, and many other factors can cause this.
This collection of articles will help you with proper vegetable gardening:
https://www.gardeningknowhow.com/edible/vegetables/vgen
This article will help you with knowing what type of soil to use in your application:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/best-soil-raised-garden-beds.htm