@Shuimitao … best time to plant either berries or stratified seed is in the fall.
Sang berries in most States where it grows ripen in September… here a few will be red ripe in mid august… but many more will be red ripe by Sept 1… with peak ripeness mid Sept. Early October here most red berries have dropped already but a few will still be on some plants. When you find it in Oct the leaves are often yellowed at that point and red berries on… georgious… and much easier to spot.
If you plant red berries in the fall… they will not sprout the next spring… but will the second spring.
If you purchase stratified seed and plant it in the fall… it will come up in the spring.
Most will anyway… but not all do the same… I have seen stratified seed that had low germination rate the first spring… and then the second and even third spring more of it germinated and sent up new 3 leafers.
A bit more on ginseng seed (stratified seed)… most stratified seed that you can buy online comes from a (artificial shade grown, cultivated ground, operation) where they use fungicides, pesticides, chemical fertilizers, etc on it to produce a harvest quicker. Usually 4 years and they are harvesting. But… the berries and seed are subjected to lots of fungal disease issues, since they are growing it thick and spraying it to keep the foliage issues under control.
When you purchase that seed… it is best to purchase it early in the fall… not long after the supplier takes the seed out of their stratification process and gets it ready for sale. So you purchase it not long after they pull it up from stratification… and when you get it, you plant it asap.
Anytime that stratified seed is pulled up from stratification process… then stored (for example in the fridge)… for longer periods of time, that can mess up the germination rates. IMO it does not matter if the seed supplier is storing it, or if you are storing it… sure they may do a better job of that than you, but either way, the longer that seed stays in artificial storage (refrigerated) after stratification… the more likely you will have germination issues.
Order early, plant it asap after you get it… to get best germination rates.
If your seed supplier does not properly treat the seeds, you should.
10% Clorox / water solution for 5 minutes.
Any seed that floats needs to be discarded, it is bad, and most likely diseased.
You don’t want to plant those in your beds.
Properly stratified seed will look like this…
![Guy stratified seed proper embryo development](https://d55v7rs15ikf5.cloudfront.net/original/3X/1/5/15902a56af4aa7e0c27407676f6f1e4fd3d41e38.jpeg)
You will be able to see the embryo inside if it is properly stratified. If not it will be just clear white. Some shady vendors (several years back) were selling green seeds (not stratified) as stratified seeds.
If it is not stratified, there will be no sign of a embryo inside.
TNHunter