You can leave them if you like. You will get much better flower production during the season if you immediately clip spent flowers but I.
Zinnias will grow in a minimum daytime temperature of about 60F 16C though a range of 7484F 2328C is preferred.
How to harvest zinnia seeds. Direct seed – After last frost sow 14 deep. Once the zinnia flowers are dry cut or pull them off the plant. The holes should be about a quarter of an inch 6 centimeter deep for the.
It is a fairly easy pr. Break apart the center section of the flower thats left and place the seeds on a plate or in a clean container. Leave the brown flowers on the plants so the seeds can ripen.
Trying to harvest a flower too early will result in immature seeds that wont germinate. Sow a round of seeds every. Sowing Zinnia Seeds If you had to harvest seeds from mildewed plants submerge them for a half hour in water that has been heated to 125 degrees.
See your local frost dates. Use your fingers to make small holes in the ground. Seeds are ripe when the flower.
Harvesting zinnias as cut flowers will also encourage full growth telling the zinnia to keep producing blooms until some can go to seed. Stop deadheading zinnias at the end of the summer to allow the flowers to develop seeds. Wait for the Zinnia Flowers to Dry Before Harvesting.
SUBSCRIBE for more gardening tips tours and tutorialsToday I want to show my fellow colorful gardeners how to harvest zinnia seeds. Zinnias are sensitive to frost so do not seed until the last frost has passed. The last of the Zinnias for this year.
They shouldnt really affect the saved seeds. Plant zinnia seeds a quarter inch 6 centimeter deep. Pull the flower apart and remove the seeds inside or simply put the whole blossom full of seeds.
If you want to encourage tall zinnias stake the largest so they dont flop over. Cut the stems above leave or bud nodes and the stems will keep growing and producing new blooms. Pinching of initial bud or bloom and subsequent deadheading is recommended to encourage strong branching and bloom production.
Each flower will be dark brown and dry to the touch when it is ready to harvest. But if you want to harvest zinnia seeds you have to let the old flowers fade turn brown and dry out on the plant so they can produce those precious seeds you will be planting next year. To save Zinnia seed or other flower seed I usually leave the spent flowers on the stems until they are dry or pretty close to it.
Simply clip off a dried flower head from each color that you want to save. Succession-sowplant every two weeks for prolonged yields of high-quality stems. Pick out any dried petals that may be mixed in with the seeds.
Allow the zinnia flower heads to dry completely on the plant. You dont need to let them all go to seed at once continue to deadhead to keep the plant producing buds and flowers throughout the summer while selecting a few to leave on for seed production.