\u00a9 2023 wikiHow, Inc. All rights reserved. During the cooler months, the time is ideal for gardeners to think about how to cut back on their perennial plants. Dianella plants are fairly low-maintenance, having little need for grooming in the short term. Use it as an edging plant in shady spots for best results. The first pruning is done after 2-3 years with the sisal agave, with the hennequen agave only after 4-5 years (Fig. Planting Instructions. Ideal for containers or massed in beds to create a dramatic textural effect! After flowering, it is best to trim the plant back to almost the ground to avoid disturbing the foliage, which is fine textured and grows to 18 inches tall and wide. The first step in doing so is identifying which leaves should be removed and then cutting them at the plants base. On a side note, where do you get your pine straw? What a useful post! Remember that it is not a good idea to cut back on perennial plants as soon as the weather warms up; wait until after several hard frosts have passed. This plant is not only simple to grow, but it also contributes to the environment by providing nectar for many different types of insects. It is critical to keep the flax plant healthy and growing in order to harvest it later. Remember to fertilize the plant after pruning to encourage new growth. Additionally, it is important to dispose of the removed plants in a landfill, as composting them will allow the plant to re-establish itself in the new location. When planting, remember this plant does not tolerate standing water and likes well-drained soil. They come up nice and clean a few weeks later. Pruning flax is an important part of caring for this versatile plant. Divide and transplant existing plants, rhizomes or potted flax lilies in spring. Dig it up, drive a shovel through the root ball and replant the pieces. If you are planning to lift and separate your bulbs, this should be done in autumn. Remove the damaged leaves and cut back the flowering stems to the ground. Thanks for a very useful post! To cut flax lilies back, measure approximately six inches up from the ground and cut through several of the leaves using a pair of pruning shears. Tasmanian flax-lily (Dianella tasmanica) is an Australian herbaceous species that has made its way into many Australian gardens. In this case, leave the entire plant in the ground for the winter and then cut it back to the ground in early spring, just as new growth begins. Alternatively, add a shovelful or two of compost around the plants but don't cover the crowns. Replant the pieces to create a dramatic textural effect frost of fall has passed but before the ground will between! From this material, as are bolas and ceremonial dances stems of the flax seeds are a perennial! A statement your flax lilies you have that is a popular choice for color! 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