I don't believe you are using the term backcrossing correctly. Backcrossing is when you reintroduce genes from years removed progenitors of the same cultivars to great great great great great great great etc. grandchildren offspring. Not crossing with completely different cultivars.
I'm not sure what you mean by cross pollinating. The Afghani Jordan vintage 2019 and every vintage prior (with the exception of vintage 2008 which was pollinated with a male of the same Afghani Jordan seed purchased in 2007 from Kindseed in Vancouver, B.C.) was pollinated by nanners that I never detected. Every year's female grow of this cultivar for ten successive years outdoors has produced a very small (less than 15 seeds per plant) number of seeds which I continue to cultivate in my outdoor garden.
Right on Jim Nirvana!!! I would never use chemicals myself nor would I recommend them to anyone else. Ladybugs, praying mantis and other plants are 100% the way to go if you care about what you are going to put into your body and those that you share your bud with
Before spraying anything on your outdoor grow you absolutely have to identify what you are targeting. I consistently have success with praying mantis and ladybugs. If those aren't available a fine but strong mist of water (ie thumb over the hose end) knocks off aphids without much trouble at all. Make sure to direct spray at undersides of leaves as well. Basically everywhere you see them. Outdoor chickens are fantastic for insect control as well
I've been breeding my own cultivars for decades. The recent outdoor grow I have currently maturing includes a vintage 2009 Afghani Jordan male back-crossed with 3 vintage 2019 Afghani Jordan females. I selected the 2009 Afghani Jordan male to be the stud server then removed it to mature in a location more than 10 miles from my female grow. I collected pollen from the male and have selectively applied it to the pistils of various female flower tops using a fine bristled paint 🖌️ brush. I have no idea if I've applied the pollen in a fashion that will produce a seed. I've never fertilized females in this manner before and I'm curious if maybe someone out there has and what level of success you experienced in terms of the isolated number of seeds this technique produced. I have several other female cultivars in this outdoor grow that I didn't want to become fertilized with the male 2009 Afghani Jordan pollen and this is why I removed it from my vicinity and responsibly isolated it far from any other known urban grow in the sin city of 2 million where I reside. Have any of you "back-crossed" original vintage cultivars with cultivars years removed from the original parents? What was your experience if so?