No doubt, that are Amaranthus, in my home country they are popular veggies.

Jose - if you really want blueberries fork out a little cash for plants (not seeds) of named cultivars suitable for your climate and conditions. I am afraid there are countless scams on the internet where people are sending out what are basically weed seeds to unsuspecting growers.

the weed seed could have also been in the media ...

whats the germination period of blueberry??

ken

Ken...look at the last photo. Contamination of the media would result in a random distribution of a random number of seedlings...not exactly four of the same species all lined up in a row.

If the OP is intent on growing blueberries from seed (why, I don't know, the plants are cheap enough), he'd be better off buying blueberries at the store and going from there.

i couldnt tell from the 2 pix.. if they were the same pot.. a month or so apart .. or two different projects and pots ... especially since the bike isnt in the second pic.. lol ...

ken

No. Blueberries, at least that common name here in the US, are woody plants from the Vaccinium genus. What you have grown is Amaranthus, an herbaceous ( non-woody) plant. Sorry, you were misled. It is always better to be provided with an accurate scientific name for your plants.

Blueberry seeds and seedlings are tiny. The plants are slow-growing woody shrubs needing a cool situation and acidic soils.

I bought the seeds from china

Caveat emptor.