How long does it take for a blackberry to germinate?

Blackberry seeds typically take about 2 to 3 weeks to germinate under ideal conditions, which include consistent moisture and temperatures around 70°F (21°C). However, germination can be delayed if the seeds are not properly stratified, as blackberries often require a cold treatment to break dormancy. After germination, seedlings may take several months to grow strong enough for transplanting.