Main page Habit Foliage Flowers Seed-heads Seedlings
Common groundsel (Senecio vulgaris) flowers heads are 1/4 to
1/2 inch long, tubular, and yellow.
Each flower head is composed of many individual disk flowers. In
the extreme closeup below, you can see the individual flowers that make up
the composite head.
The black tipped involucre bracts are another unique identification characteristic
of this weed.
Each disk flower develops into a single seed covered by a cotton-like
Common groundsel can develop flowers at a very small size. This neccesitates
postemergence control of escape weeds soon after germination.
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