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July 2010
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Siberian Wallflower (Cheiranthus allionii) – also known as Heart’s Ease, Bee-flower, and yellow Violet

This plant is a native of Europe. It is a biennial flower in cold climatic conditions and perennial in warm conditions. Its life cycle is 2 years. It flowers are four petaled fiery orange to yellow in color and has nice fragrance. Only leaves grow in first season and then blooms flowers in second season. After the two-year cycle, the seeds die with first frost. They are short lived sub-shrubs.
The height of plant is usually less than 2 feet, approximately 18-24inches. It has stems that are of creeping type and leaves are narrow and sessile. The flowers are cluster headed. The flower is 2 inches in height and 1 inch wide. It’s an early season flower i.e., in Mid Spring and Late Spring/Early summer. These can be found in all regions of North America. Its cluster headed flower self-sows freely. Its pH requirements are 6 to 7.5 (neutral), 6 to 7.8 (mildly alkaline), and 9 to 8.5 (alkaline). It’s ideal to grow for rock gardens and mass planting.
It’s a food plant for many species of larvae like butterfly, moth. Some species like weevils feed on inside on seeds and other like Beetles, bugs feeds on leaves and stalks. Bees and bee flies pollinate the flowers. The flowers are inflorescent, that is, it is in a group or cluster arranged on a stem of a main branch. They are heat and drought tolerant.

Growing Conditions of Siberian Motherwort

• Sow the seeds outdoors on a seed bed by scattering the seeds on loosened soil. Do not cover.
• Germinate at 65-75F for 15-30 days.
• Sow 1/8th inch deep in soil.
• Requires full to partial sun.
• The soil should be neutral to slightly alkaline.
• Thin to 6-9″ apart.
• Provide with enough water and plenty of sunlight.
• Plant just before spring and blooming is in spring.
• Transplant the seedlings in fall if wanted in permanent locations.
• Self-sows easily.
• USDA Hardiness Zones 4 to 9.
• PH requirements are 6 to 7.5 (neutral),6 to 7.8 (mildly alkaline),9 to 8.5 (alkaline).

Care for the Siberian Motherwort

• Regularly water early during the growth.
• Lightly water 2 or 3 times a week during germination.
• Get full/partial sunlight.
• Do not compress the soil while growing them as it needs some air circulation.
• Germinate seeds at 65-75 F
• Do not over water as it can lead to growth of weeds and disease.
• Average moisture and well drained soil system.
• Fertilize only if the soil is very poor in organic matter. Do not over fertilize.
• Over fertilizing shall effect blooming and in return to the seeds too.
• Herbicides can be used if required in second season.
• Its adaptable to different soil conditions and so can be transplanted.

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