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Planting Instructions for Heliopsis (false sunflower):

Bloom Time:  Summer Light:  Full sun to part shade
Soil:  Humus-rich, moist but well-drained Moisture:  Evenly moist, somewhat drought tolerant
Planting Depth:  1 to 2" deep, mulch 1" Spacing:  18 - 24"

Upon arrival:  Unpack box and check that you have everything on your packing list. Bare root Heliopsis can be dry while dormant but should be planted within a day or two.

Soil/Location:  Plant your Heliopsis in full sun to part sun in loamy to humus-rich, moist but well-drained soil. They are somewhat drought tolerant but need good soil and regular moisture for best performance.

Moisture:  Heliopsis is fairly drought tolerant but regular moisture at the root zone is recommended for best growth and disease prevention. The crowns and roots should also never be exposed as this can cause the growth tips to dry out which can stunt or prevent new growth.

Spacing:  18 to 24" apart

Depth:  Plant with the top of the crown about 1 to 2" below the soil so that the crown and roots are completely covered. Mulch about 1" deep after planting.

General Instructions:  Amend your garden with compost or peat humus to enrich and loosen the soil. Mix a couple tablespoons of garden food or bone meal into the planting hole. Plant the roots at the depth listed above, backfill and then water in once. They don't really need water when dormant but are very tolerant of both dry and wet conditions so long as the crown is never exposed. Once they are actively growing they enjoy deep watering 2 to 3 times a week or as needed if the soil becomes dry and they wilt.

Powdery mildew can be a problem with all Heliopsis plants. We recommend even moisture at the root zone to keep the plants vigorous and a preventive spray using a systemic fungicide twice a summer to keep the problem at bay. If mildew does become bad it is usually late in the season and then the plants can be cut back anyway.

Landscape Uses:  Yellow false sunflowers combine very nicely with purples and blues such as Platycodon (balloon flowers), Liatris (gayfeather), Veronica (speedwell), Vernonia (ironweed), Campanula (bellflower), Geranium (cranesbill), or tall garden phlox. Or you can really make a really bold statement by combining them with red, orange, or hot pink shades of plants such as daylilies, lilies, phlox, Gaillardia (blanketflower), or Crocosmia.

Self-sown seedlings are fairly common and the seedlings from Heliopsis 'Loraine Sunshine' PP#10690 are surprisingly often true to type with the same variegated foliage. Plants can be divided in spring or fall as needed for propagation or to control their size.

 
 
Hallson Gardens
PO Box 220
Brooklyn, MI 49230
517-592-9450

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