Transplanting iris bulbs not only increases the sizing of your iris bed , it revitalizes previous iris plant as well . After several years of grow in the same locating , rhizomes multiply and solution begin to crowd together , reducing bloom sizing and farm pale blooms . Bigger , brighter blooms will honor an afternoon ’s work of digging and transplanting the bulbs the following year .

Step 1

educate a raw emplacement for iris in a sunny location . Till the soil to a depth of 6 - 8 column inch . polish off sway or roots and meliorate the soil with compost or well - rotted manure . body of work amendment into the existing soil .

Step 2

Dig iris bulbs once the foliage start to die back in late summer . Although gardeners normally refer to these as bulbs , many common irises actually grow rhizomes , a thickened root with root along the bottom and side of the tuber . Rhizomes maturate near the Earth’s surface of the soil and bring forth new rhizomes each year . Lift the bulbs free of grime with a garden fork or spade .

Step 3

pare foliage to a height of 4–6 inches for easy manipulation . softly tug the rhizome to pull them apart . veer individual rhizomes away from the independent bulb with a sharp knife if necessary . Each section must have several clean solution .

Step 4

Inspect rhizomes for any star sign of disease or dirt ball impairment . Healthy rhizomes are firm and plump . Discard any mushy or discolored lightbulb .

Step 5

Plant rhizomes so that the top one - third of the bulb is above the control surface of the soil . Firm soil down around the rhizome and water thoroughly . Keep grime moist throughout the fall to help your iris develop strong beginning organisation . Growth resumes in springiness , rewarding you with robust growth and large , showy blooms .

Plant Iris Bulbs

iris ( Iridaceae ) , growing in shades of empurpled , pink , down , yellow and many colors in between , are six - petaled blossom . They may be bearded — with three upright petals and three hanging single — or smooth-faced , with smooth , proportionate falls . However , with the exception of Pacific Coast Native irises ( PNC ) , which flower first , smooth-faced varieties produce efflorescence after the bearded flowers fade . Beardless irises also have fibrous - rooted rhizomes ; their tops must be planted more or less beneath the soil . Some smooth-faced irises may be planted in former springiness . In zones 9 and 10 , irises and other bloom bulb grow in Mediterranean climate but hardy to cooler regions may be planted from mid - August into December or mid - October through late January , notes the internet site ColorBlends . Irises need direct sunlight and room to spread . Apply organic mulch after fall plantings to protect tender source systems . After prime die , veer iris stalk back to an inch or two above the ground to prevent seeds from forming . fertilise iris with a 5 - 10 - 10 solution but do not let rhizome fare in direct inter-group communication with the chemicals .

Things Needed

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