Plant Care And Grow Guide For Amsonia


The purpose of this guide is to provide the reader with a general overview of the care and growth of Amsonia. All plants require some form of attention, but these tips have been compiled from multiple sources to help you make your plant grow as healthy as possible. 

1. Watering:

Plant Care

Amsonia generally does not need a lot of water. Too much water can be harmful to the plant. When watering your Amsonia, make sure that the soil is dry before watering it again. The best way to check the soil moisture is to stick your finger in the dirt up to the first knuckle. If the soil feels moist, then you don’t need to water it. However, if the soil feels dry, then you will need to water it. 

2. Fertilizing:

Plant Care

Fertilize your Amsonia every two weeks during the growing season with a balanced fertilizer such as 10-10-10. You can also use an organic fertilizer such as compost or manure. 

3. Pruning:

Amsonia can be pruned in the spring or fall. To encourage bushier growth, cut the plant back by one-third of its height in the spring. To keep your Amsonia from getting too leggy, pinch back the tips of the stems in the summer. 

4. Winter Care:

Amsonia is a perennial plant, which means that it will come back year after year. However, in colder climates, the plant may die back to the ground in winter. If this happens, don’t worry, it will regrow in the spring. In areas where winters are milder, Amsonia can be left outside all year long. 

5. Plants and Pests:

Amsonia is generally a pest-free plant. However, if you do notice any pests on your plant, such as aphids or scale, you can remove them by spraying the plant with water from a hose. You can also use insecticidal soap or neem oil to get rid of the pests. 

6. Propagating Amsonia:

Amsonia can be propagated by seed, division, or cuttings. 

7. By Seed:

To grow Amsonia from seed, start the seeds indoors in late winter or early spring. Sow the seeds on the surface of a sterile seed-starting mix and cover them with a thin layer of sand. Keep the mix moist and place the seed tray in a warm location. The seeds will germinate in 21-30 days. Once the seedlings have grown their first true leaves, transplant them into individual pots. 

8. By Division:

Amsonia can also be propagated by division. To do this, dig up the plant in the spring or fall and divide it into several sections. Each section should have at least one bud. Plant the divisions in prepared holes and water them well. 

9. By Cuttings:

You can also propagate Amsonia by taking stem cuttings in the summer. To do this, cut a 4-6 inch piece of stem from the tips of the plant. Remove the bottom leaves and dip the cut end in the rooting hormone. Plant the cutting in a pot of sterile seed-starting mix and keep the mix moist. The cutting will root in 4-6 weeks. 

10. Transplanting Amsonia:

Amsonia can be transplanted in the spring or fall. When transplanting, make sure to choose a location that has well-drained soil. Amend the soil with compost or manure before planting. Water the plant well after transplanting. 


Amsonia is easy to grow and can be planted year-round. They prefer full sun or partial shade with well-drained soil. Amsonia thrives in USDA Zones 3a-8b. These plants have a long blooming period from June through August and produce flowers that range in color from white to lavender blue. If you’re an avid gardener who enjoys adding new varieties of plant life into your garden every season, we recommend planting this beautiful flower! It prefers dry conditions so make sure it is properly watered during the hotter months when they are most active growing! Enjoy these gorgeous flowers as they provide not only beauty but also food for bees which help pollinate other nearby plants.

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