Make sure your seeds stay warm enough. To properly germinate, the seeds need daytime temperatures of at least 70ºF (20ºC) and nighttime temperatures around 60ºF (15ºC). Use a greenhouse or warming mats to keep your seeds at the correct temperature. Keep the soil moist but not too wet. Mist the surface with a fine spray of water when it starts to look dry. Check for growth. Grape seeds typically take between 2-8 weeks to sprout
E**C
Question viability
I am following some printed instructions on how to grow concord grapes from seeds (seeds arrived with no instructions of their own). Step one says to put seeds in a cup of water and that viable seeds will sink and to discard any that float. Well not sure if you can see in pics but 10 are floating and 5 sank to the bottom. I am going to keep those that sank marked and attempt to grow all 15 seeds. If any of the floaters do sprout and grow I will change my review. But at this point it appears 2/3 of the seeds are not viable. Probably not best option to purchase seeds on Amazon. Also not sure what a "plant marker" is but envelop only had a small ziplock bag with 15 seeds and a sticker that says 15 concord grape seeds.
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