Dianthus species, including popular varieties like Pinks, Carnations, and Sweet William, are cherished for their ruffled blooms and spicy fragrance. Gardeners often collect seeds directly from the plant to propagate these flowers. Understanding the appearance of these seeds is the first step in successful collection and preparation for the next growing season.
Visual Characteristics of Dianthus Seeds
Dianthus seeds are distinctively small, making them challenging to spot amidst dried plant debris. A single seed measures only about 1 to 2 millimeters in length, resembling a speck of ground coffee or a tiny, irregular pebble. Their minute size contributes to their dark coloration, typically deep black, dark brown, or occasionally mottled gray-brown.
The shape is a defining feature, often described as a distinctive comma, kidney, or D-shape. This unique curvature helps distinguish them from random debris found within the seed pod. The surface texture is rough, featuring minute pits or ridges, which gives the seed a slightly dull appearance.
Identifying and Harvesting Seed Pods
Dianthus seeds develop inside a small, protective capsule or seed pod, which forms after the flower has faded. The proper time for collection is signaled by the capsule drying out completely on the stem. This drying process is indicated by the pod turning a brittle, light to dark brown color, losing all traces of green.
A mature seed pod often begins to split open slightly at the top, revealing the seeds inside. If a pod is still green or soft, the seeds within are immature and not viable. To harvest, simply snip the dried stem just below the capsule or gently twist the brittle pod off the plant. The seeds can then be easily shaken out of the dried capsule into a container.
Basic Seed Handling and Storage
Once collected, ensure the seeds are fully cured before storage to prevent mold and maintain viability. Spread the seeds out on a paper towel or screen in a single layer for several days in a warm, dry location away from direct sunlight. Any remaining chaff or plant material should be removed during this process.
For long-term storage, place the seeds in breathable containers, such as small paper envelopes or tightly sealed glass jars. Plastic bags are avoided because they can trap moisture and encourage fungal growth. The labeled container should then be stored in a cool, dark, and dry environment, such as a closet or a refrigerator.