( Plant width : indefinite ) Vigorous and upright , sometimes floating or submerged , deciduous or semi - evergreen , rhizomatous perennial . Leaves are running and flat , dark green and translucent . float stems support unbranched spikes with greenish brown flowerheads that bloom in summertime followed by conic , prickly brown or dark-green yield .
Google Plant Images : flick here !
Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
As perennial establish , it is important to crop them back and dilute them out occasionally . This will preclude them from completely taking over an area to the exception of other plants , and also will increase line circulation thereby slim the relative incidence of diseases like botrytis and powdery mildew .
Many mintage also flower profusely and produce ample seed . As blooms disappearance it is advisable to deadhead your plant life ; that is , to take away spent flowers before they imprint seed . This will prevent your plants from seeding all over the garden and will maintain the considerable energy it takes the plant to grow seed .
As perennials mature , they may organize a dense root mass that finally leads to a less vigorous industrial plant . It is advisable to once in a while thin out a bandstand of such perennial . By divide the base organization , you may make new plants to plant in another area of the garden or give away . Also root pruning will stimulate unexampled growth and rejuvenate the plant . Most perennials may be successfully divided in either fountain or fall . Do a small homework ; some perennials do have a preference . How - to : Planting PerennialsDetermine appropriate perennials for your garden by considering sun and shade through the day , photograph , water necessary , clime , soil makeup , seasonal color desired , and attitude of other garden plant and trees .
The best times to plant are spring and fall , when soil is workable and out of risk of hoarfrost . Fall plantings have the vantage that roots can develop and not have to compete with developing top growth as in the spring . Spring is more desirable for perennials that dislike besotted condition or for colder region , allowing full organization before first winter . Planting in summer or winter is not advisable for most plants , unless planting a more instal sized plant .
To implant container - grown plant life : fix implant hole with appropriate depth and space between . Water the flora thoroughly and let the spare H2O drain before cautiously removing from the container . cautiously relax the stem ball and place the plant life in the pickle , working soil around the roots as you fill . If the plant is extremely origin tie up , disjoined roots with fingers . A few prick made with a pocket tongue are fine , but should be kept to a minimum . Continue filling in soil and body of water good , protect from lineal sun until stable .
To plant bare - origin plants : industrial plant as soon as potential after purchase . Prepare suitable planting maw , spread roots and work grunge among roots as you fill in . Water well and protect from unmediated sunshine until stable .
To establish seedlings : A number of perennial bring about self - sown seedling that can be transplanted . You may also set out your own seedling bed for transplanting . Prepare suited planting kettle of fish , spacing appropriately for works ontogeny . Gently wind the seedling and as much surrounding stain as potential with your garden trowel , and replant it right away , tauten soil with fingertip and water well . Shade from direct sun and water system regularly until stable .
