With me, when planting radish and turnips, this is a good thing! I always plant to heavy, but when planting BOB seed, it seems to work out better, and I get bigger plants. Funny how less is more!
Actually, that is more is more...more sun, more nutrients, more water on a per plant basis. I find getting seeding rates right can be a challenge, and it can be unique to your situation. BOB companies tend to get rates in the right general ball park, but what works well in one situation may not work in another.
In general, BOB seed fills a niche. For folks who are planting tiny areas, the cost of seed is insignificant. The convenience of BOB seed, especially a mix, can be less expensive. Even with the right conditions, as seed ages the germination rates drop. So, buying seed in 50 lb bags and mixing it themselves is problematic. Even if you have the facilities to store the see properly, the seeding rates change from year to year. Some seed stores better than others. So, if you are planting a tiny amount of ground just for attraction and you find a BOB mix that works well for you, why not.
That is not to say the BOB mixes don't have big issues. The obvious one is hit in this thread, the cost on a per pound basis which really adds up of you are planting significant land for QDM purposes. Another is that most BOB seed is sold nationally or at least regionally. So, some seed in the mix may not even grow in your location and with your soils or perform very poorly. Not all BOB seed companies are created equal. Some simply charge you more per pound and are up front about it. Others play games like advertising a particular crop in the mix that is a high quality, high cost seed. When you look a the fine print on the seed tag, you find that only a tiny percentage of the seed in the mix is that seed, and most if the seed in the bag is a very inexpensive filler seed. This takes the cost/pound of your desired seed from very high to ridiculous. A third thing I've seen some companies do is to change the contents of their mix from year to year base on seed prices. The bag looks the same, the SuperMosnsterMegabuck mix name is the same. Unless folks are seasoned enough to look at the seed tag, they wouldn't know they are buying a different mix than they bought last year.
The bottom line is this:
BOB seed mixes are expensive on a per pound basis and have a number of issues, but fill an important niche in the market. Whether you use them or not, the more you know....the better you grow!
Thanks,
Jack