If you have extra seeds that you’re not planning on using right away, don’t throw them out! Instead, store them in a screw-top jar and keep them in the refrigerator (not the freezer). This will help them last for years to come. So, next time you receive seeds, don’t let them go to waste – save them for later!
The perfect timing for seeding polyanthus, acaulis, and auricula is between February and April. Although a bit of frost can aid in the germination process, it’s best to wait until March or April to sow in areas with tough growing conditions.
Spring flowers can still be expected even if you plant before May ends. In case it’s really necessary, you can sow until July’s end and ensure that they stay moist and chilly.
It is important to use the right type of compost for your primula plants. Using fertilizers with high mineral salt levels can be harmful to them, as they are very sensitive to it. If the combination is too strong, the plants may not grow at all or their young roots may die. Therefore, it is recommended that you always use seed compost and look for ones that are fibrous and gritty. This is because primula roots need air to grow properly, and if the compost is too fine, the air will be forced out completely.