Grow Your Own Delicious Thimbleberries from Seeds
Growing raspberries from seeds is a good way to increase and diversify a population of unique individuals. This strain came to us from a seed collector in the Sierra Nevadas. It has been not only fully hardy in southern Michigan but much more productive than the northern Michigan thimbleberries that we have.
Here is how to grow them from seeds: Outside method: Plant by tamping into the surface of the soil and lightly covering with soil with just a dusting of soil to hold the seed in place. In the spring some may come up but the majority will come up in the following spring. Seeds need this double dormancy to get water into the seed as well as wear away the outer seed coat. Some seeds will naturally sprout the first year but most come up in the second year outside. Inside method: Put seeds in a moist Canadian peat moss and store for a week at room temperature and then put in the refrigerator (33-38F) for 90-120 days. They normally will not sprout in the fridge. After the cold dormancy period put in a tray or pot and lightly cover. Water so as not to let the top soil dry out too much. Some seeds may emerge in a weeks time. They are hard to transplant by plucking them out but it is best to catch them prior to having them produce the first true leaves. They will then transplant easier this way with little stunting in the pot.
|Genus & Species||Rubus odoratus x parviflorus hybrid swarm|
|Width (ft)||Clones outward|
|Soil||Sandy loam, slightly acidic|
|Ease of Cultivation||Very easy to grow once established and then it spreads via rhizomes quite luxuriantly.|