Yes, No flowering. You can just trim it. That is wild spinach.  I love it.  I grew up in Northern NM near Colorado and it grew close to the ditches.  It was a daily summer staple in our home.  We would steam it then sauté with onions, bacon and 1/2 to 1 tsp red pepper flakes and mix a little in with our cooked Pinto Beans and Red Chili.  I've prepared it without bacon for vegans.  Try it with some tortillas from Frontier.  YUM... Enjoy!

Lucille