I find if one don't want to cage a Brandywine they do fairly well with one or two steel fenceposts (right at the plant or two about a foot apart in line with the plant, so you can loop tie to the supports), Early Girl has returned well for an indeterminant. A smaller tomato with 4-6 ounce fruits. It will start fruiting at the bottom and go up as it gets bigger and older. One will keep someone in fresh eating tomatoes throughout the season, grab the couple a day that are ripe as it starts and it will keep at it to frost.
A good one I grew this year, mostly indeterminant, is
Joseph Lofthouse's Short Season
Landrace. I put them in 54" 9 gauge tomato cages and they tipped those some. Might suggest a back
trellis of a calf panel and held up with a few steel fenceposts. Just tie the tomato vine to the pane, and a 16' long, 50" high with three set
fence posts (one at each end and one in the middle) will allow for 5-7 larger tomato plants. These topped at about 4 1/2 feet. Fruiting from the bottom as they went up, some determinant tendencies to make a mid crop layer in the plant. Blooming and setting to the top of the plant as it goes, but tapering off after it loads the middle.
The only determinants I grow are Roma and sauce style, and those often do better with lower garden fencing, a few concentric rings to keep the vines off the ground and about 3' high. I
thread the vines through at 18" to 24" and that is the fruiting layer, the height is to allow me to rig shade as the fruit will sunscald unless one grows in afternoon shade from shadecloth or a handy tree.
I am at 6b with fairly high sustained winds, low humidity, altitude (which can add to sunscald) and a bit of a calcium deficient soil. Early Girl likes to blossom end rot, so have a soil test done .
How large is your garden?
How much space do you have for tomatoes? I usually go on a grid, and figure 3' radius for a small tomato and 5' radius for a tall large beefsteak. This year I planted rows, I usually plant blocks of four plants and put a step paver in the dead middle for working. My line rows were 10' apart, and the plants put in either 30" apart or 60" apart depending on size.
How many plants do you want to grow?
Areas you grow tomatoes
should be grown with something else in rotation, tomatoes every third year in that spot.
Do you want salad/eating; salsa and sauce; beefsteak; and what sort of a production do you wish?
To extend your season and choices, are and do you want to, start your own or get plants early and do a little uppotting and deep planting to add to the
roots, sturdiness and get a head start?