“The cabbage loopers and heat would have destroyed them in the summertime.”
That’s a whole ‘nother subject - timing planting to defeat whatever PESTS you have in your area.
I do that with my Raspberries. I grow ‘Heritage’ so I can cut them all the way back in the spring and get ONE crop, later in the season (Sept/Oct). That way the @#$%^&*! Japanese Beetles are DEAD (and gone to HELL where they belong!) and also the ‘Picnic Bugs’ (those tiny black beetles) are gone, so I have little to no damage to my Raspberries.
Timing planting. One of the reasons I put the cold hardy crucifers in early. (I need to do peas and stuff too.)
We have Latham raspberries, they give two crops, cut them back halfway in the fall and then just let them grow. The first crop is the heaviest.