Ninebark (Physocarpus opulifolius) is best pruned in late winter or early spring before new growth begins. This timing allows for rejuvenation while minimizing stress on the plant. For older plants, cutting back about one-third of the stems can stimulate new growth and maintain a healthy shape. Always remove any dead or damaged branches at the same time.
You don't "trim back" a Physocarpus (NineBark); you remove no more than 1/3 of the stems (the longest ones) at the base of the plant, at the crown of the root ball (ground level). This reduces the shrub's overal size, reduces density, allows light to reach the interior of the plant and air to circulate, preserves the natural shape of the plant, promotes health and vigor, and does not dimish flowering of the remaining stems. It should actually increase bloom production, assuming the remaing stems have not been previously "trimmed back" !
Cut off the old flower stems leave the leaves.
After they have flowered. Do not cut below green wood as they do not sprout from brown stems.,
If you cut back the flowering stems of lupins after the flowers have faded you will get a secondary flowering. Any other cutting back should be to the ground in Spring when growth restarts.
Hyacinth stems can be cut after the flowers have finished blooming and the foliage starts to turn yellow. It is important to allow the foliage to die back naturally to help the bulb store energy for the next growing season. Cut the stems to ground level once the foliage has dried out completely.
If the plant's basic structure has been established, then just remove dead stems and one or two older shoots at the base, then shorten side shoots to about 3 inches or 8cm. The main stems that have flowered at the end are also cut back to the nearest side shoot, but all other main stems are left as they are.
Not necessarily, the stems died after fruiting and fresh shoots are produced from the base each year
You can cut down the stems on a potatoes but this may slow their overall growth. The stems are a vital part of the plant which provide nutrients and grow considerably as it does.
There are a LOT of different types of salvia. Some are perennial and some are annual. If yours is a perennial you should cut it back for the winter. Recommendations differ for different climates, but usually you can cut it back to 6-8 inches. Leave the stems a little taller in Prairie climates.
If you mean individual stems throughout the season then yes, you can trim back daylilies after they flower. Once all the buds on the stem have flowered remove the whole stem, but not the leaves.
yes, you trim the spent flower stems off, but you don't trim into old wood
To promote regrowth in a plant, you can cut it back by trimming the stems or branches above a leaf node or bud. This will encourage new growth to sprout from that point.