Q.Growing broccoli
Last year I planted broccoli and when it grew very tall and had yellow flowers on…..even I knew it wasn’t broccoli! A friend told me to pull it up as it was rape and would spread. I did so and wrote to the seed company who told me to give them details of the seeds. I had thrown the rest away by the time they replied! So had no details of numbers dates, etc. I have got more seeds this year and lo and behold, yellow flowers again, surely I can’t be that unlucky. Can you clarify, before I pull them all up again, that it DOES NOT have yellow flowers?
Many thanks

Your broccoli is bolting. Here is an article that will help you figure out why;
https://www.gardeningknowhow.com/edible/vegetables/broccoli/bolting-broccoli-growing-broccoli-in-hot-weather.htm