Yes they are awfully close, especially for using that type of cage. 3' spacing would be better next year. if you could give us the exact name of the varieties you planted it would help. There are several varieties of Heinz and "romas" and heirloom refers to the history of the plant not the variety.

As to turning red, it takes approx. 6-7 weeks from the time the fruit forms for it to ripen and turn red so you still have time to go. Be patient. :)

Dave

Dave is rignt on all counts, but I'll add this: There are some heirloom and open pollinated tomatoes that don't get red. There are white ones, yellow ones, orange ones, the so called "purple" and "black" ones, and even some that are green when ripe. If you have a green when ripe, orange, yellow or white, you might be waiting a long time for them to turn red and they'd get over ripe. If you have one of the purple or blacks, you might think they have gone bad, when they haven't.

I'm just sayin'......

Betsy

Good point Betsy since we don't know the actual variety names.

Dave

Your location would help as well. Tomatoes only ripen between 58 and 85 DEG F. Temperatures outside those turn off the production of the ripening factors. Tomatoes require 1300 to 1400 Growing Degree Days (GDD) to ripen. Depending on the temperatures a given day can be 28 to 60. There is a formula that requires you to know the maximum and minimum temperatures. Any temperature below 50 DEG F does nothing for us.

I plant mine no more than 24" apart, but they never look this bushy....I stake them and also live north so now I have buds..no toms yet...all heirlooms many colours.this year I planted about
30...and gave away the same amount...cheers, martha/zucchini