Mowing was often delayed until most of the plants formed ripe seed.

After sweet alyssum has run its course, it, too, will start to form seed.

Many of the annuals are eager to form seed as soon as the flowers fade.

This will prevent the phlox plants from forming seed and encourage their root systems to strengthen.

The old faded blooms have to be snapped off so that they do not begin to form seed.

But either less light, lower temperature, or both, stir the plants into forming seed.

At least they will not form seed and cause even more trouble next year.

Then it will busy itself to form seed as is its nature.

They flower, quickly form seed and then disappear, foliage and all.

Many annuals form seed that drops to the ground in summer.