Geraniums, cherished for their vibrant blooms, offer a rewarding experience for gardeners. Collecting their seeds provides a cost-effective method to grow new plants and expand your garden, allowing you to propagate favorite varieties and cultivate a continuous supply.
Identifying Geranium Seed Pods
Recognizing ripe geranium seed pods is important. After geranium flowers fade, the plant develops distinctive, elongated, beak-like seed pods, often called “crane’s bill.” These pods are initially green and change color as they mature.
As seeds ripen, pods transition from green to brown or black. Ripeness is indicated when the pod swells, begins to split open, or when white, feathery wisps become visible. Select pods that are dark, rounded, and still closed, as split pods may have already ejected their seeds.
Step-by-Step Seed Collection
Geranium seed pods have a spring-loaded system that can forcibly eject seeds up to three meters when ripe. To prevent loss, place small mesh bags over developing seed pods once they start to brown. This catches seeds as they are released.
Once seed heads are dry and brown, snip the entire pod from the plant with scissors, avoiding pulling to prevent premature dispersal. Gently open the collected pod. Inside, individual seeds are often attached to a feathery structure that aids wind dispersal. Carefully separate the seeds from this feathery part indoors to prevent them from blowing away.
After Collection: Drying and Storage
Proper drying of collected geranium seeds is important for preventing mold and ensuring their viability. After separating seeds from pods, spread them in a single layer on a paper towel or absorbent surface. Allow them to dry thoroughly in a cool, dry place for several days to a week.
Once completely dry, store the seeds in a paper envelope or a small paper bag. Paper is preferred over plastic as it allows for air circulation, preventing moisture buildup. Label your containers with the seed type and the date of collection to keep track of your inventory. Store the labeled seed packets in a cool, dark, and dry location to maintain their germination potential.
Using Your Collected Seeds
Geranium seeds can be sown indoors several months before the last expected frost. Soaking seeds for 24 to 36 hours before planting can help speed up germination.
When sowing, lightly sprinkle the seeds over a moist potting mix and gently press them into the soil, covering them with a thin layer of mix or sand. Geranium seeds often benefit from warmth during germination, ideally around 70 to 75 degrees Fahrenheit. Germination can take anywhere from a few days to several weeks, depending on the variety and conditions. Once seedlings are established, they can be transplanted into larger containers or outdoors after the risk of frost has passed.