I am trellising my cukes for the first time this year. Right now I have a 14' row with 18 cucumber plants spaced about 9" apart. They're still small, about 2 leaves. I have a growing guide that says to space cukes 6" apart if growing on the ground, but 18" apart if growing on a trellis. Why would this be? Is it because you only have so much space on a trellis? Does it have to do with weight? My trellis is very solid & runs the whole 14', and it's 6' high.
What should I do? Go with all 18, or cut it back to 9 or 12? General advice on cukes & trellises is also welcomed. Tks.