Planting Instructions for Astrantia (masterwort):
|Bloom Time: Summer
||Light: Light sun to part shade (afternoon shade)
|Soil: Humus-rich, moist but well-drained
||Moisture: Average to slightly moist
|Planting Depth: Top of crown 1/2 to 1" deep, mulch lightly
||Spacing: 15 to 18"
Upon arrival: Unpack box and check condition of all plants. Bare root Astrantia should be slightly dry in the bags, so if condensation has formed on the inside of the bag, open and let it air out. Plant everything within a day or two.
Soil/Location: Plant your Astrantia in a cool location, shaded from the heat of the day, in humus-rich, moist but well-drained soil. Add compost or peat humus to enrich and loosen the soil and remember to keep the soil light and airy for perennials, so cover them with loose soil and don't pack them in after planting.
Moisture: Astrantia likes even moisture. They don't like it too wet but shouldn't dry out for too long either. Allow the surface to dry between watering and then water deeply, especially if they wilt.
Spacing: 15 to 18"
Depth: Plant with the top of the crown about 1/2 to 1" below soil level and then mulch lightly after planting to help keep them cool and moist.
General Instructions: Amend your garden with compost or peat humus to enrich the soil. Mix a couple teaspoons of garden food or bone meal into the planting hole, plant the roots as listed above, then water in once. They won't need much water until they are actively growing but then it is alright to give them supplemental water a couple times a week, if needed, allowing the soil to dry slightly between watering.
Landscape Uses: Astrantias add a unique texture to the landscape with flowers that look like little fireworks going off in the garden. Plant them with other part shade perennials such as Astilbe, Alchemilla, Hostas, Carex, columbine, Hakone grass, and Tricyrtis.