The following generally apply to grassy plants: prune deciduous grassy plants, either in autumn or spring, while in the case of evergreens, such as Luzula Sylvatica, these should be pruned lightly in spring, while removing dead leaves.

Pruning is particularly recommended for plants located in difficult, wind-stricken areas or areas that are expected to be frequently affected by snow and ice. This is especially true of the Giant Silver Chinese Grassy (Miscanthus x giganteus), whose leaves can be easily separated from the stem and smear both the flowerbed they are planted with and the surrounding area. Autumn pruning is not recommended for grassy plants of "Pampa", such as Cortaderia selloana (especially for its pink flowering variety), as well as for other ice-sensitive plants. These are best tied together in autumn, covered with brushwood or a layer of straw to protect against frost, and pruned in spring, just before their flowers grow. 

In areas with a milder climate and less snow, spring pruning of grasses proves more useful, since frost in autumn, or a light layer of snow during winter, make flower beds with these plants look particularly beautiful, especially if they are highlighted at night with proper lighting. 

Pruning of bushes is done in the same way. Prune spring shrubs, such as the Blood Heart, as soon as their leaves start to turn yellow – a sign that the shrub is starting to inhibit growth and come back in summer. Remove weak inflorescences that may have remained from summer flowering, as is the case in the "Delphinium". Especially Delphinium, can bloom again during September and therefore the removal of weak inflorescences should be done at an early stage, so as not to affect healthy flowers. Do not strictly prune evergreen plants, such as wild ginger, but simply prune them lightly to maintain their shape, as we do e.g. in "Vergenia" and "Christmas Rose" (Helleborus). The same thing happens with ferns in the garden. Prune strictly in autumn those plants that are green only in summer and lightly prune evergreens in spring. 

Tip: In almost natural gardens, i.e. those gardens where we allow vegetation to grow in a natural way without much intervention on our part, you can leave uncut the flowering branches of the bushes that have now seeded uncut. Thus, the various insects of your garden will be able to find shelter there, as well as in the hollow branches of the bushes, to overwinter. In this way, you will also help the birds of your garden, who often, especially in spring, search these places to find their food.