**German Iris (Iris germanica) – Cultivation, Harvesting & Care Guide**
Also known as the German iris, this beautiful perennial plant belongs to the genus *Iris* and is native to Europe. It typically grows to a height of 30 to 50 cm and features underground rhizomes that are thick and fleshy. The German iris is a popular choice for gardeners due to its striking foliage and vibrant flowers.
**Harvesting Time and Method**
The main part harvested from the German iris is its rhizome. The best time to harvest is in early autumn when the above-ground parts of the plant turn yellow and the plant enters dormancy. Carefully dig up the rhizomes from the soil, gently shaking off excess dirt. Alternatively, you can also harvest them in early spring before new growth begins, which often results in higher quality rhizomes and lower production costs.
**Grading Standards**
Once collected, the rhizomes should be graded based on their size, shape, and number of buds. High-quality rhizomes should have no visible damage and show normal germination potential. For grading:
- Primary rhizomes should have 5 to 7 buds per cluster.
- Secondary rhizomes should have 4 to 6 buds.
- Each cluster should contain 3 to 5 buds for optimal planting performance.
**Packaging Guidelines**
After grading, place the same variety and grade of rhizomes into plastic trays. Then transfer them into small sacks labeled with the specific variety name for easy identification and transport.
**Storage Conditions**
To maintain quality, store the rhizomes in a sand medium with a relative humidity of 40% to 50% and a temperature range of -2°C to 2°C. This environment helps preserve the rhizomes’ viability and prevents premature sprouting.
**Storage Duration**
With proper storage conditions, German iris rhizomes can remain viable for 7 to 9 weeks without compromising their ability to grow when planted later.
**Ornamental Use**
German iris is highly valued for its attractive leaves and colorful blooms. It’s ideal for use in flower beds, courtyard gardens, and as a source of cut flowers. Its ornamental value makes it a favorite among garden enthusiasts.
**Planting Tips**
As a bulbous plant that grows in the fall, the ideal planting period for German iris rhizomes is between September and November. Planting during this time allows the roots to establish well before the next growing season.
Whether you're a professional grower or a home gardener, understanding the proper care, harvesting, and storage methods for German iris will help ensure successful cultivation and beautiful results.
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