Shrub, Rose of Sharon


QUICK REFERENCE PLANTING GUIDE

1. Light/Sun Exposure - Full to partial sun.

2. USDA Hardiness Zones - 4 to 9.

3. Planting Distance - 10 feet apart in ground.  One plant per 16 inch or larger container.

4. Mature Height/Spread - 8 to 10 feet tall with a 4 to 5 foot spread.

5. Bloom Time - Mid-summer to frost (starting the second year).

6. Planting Instructions - As indicated below:

Bareroot - Dig a hole at least twice the size of the root mass on each of the dormant bare-root plants.  Partially backfill the hole and position the root ball in the hole.  Position the plant so the previous soil line will be even with ground level. (The stem/trunk will be darker in color below the original planting line and lighter in color above it).  Once the plant is positioned at the proper planting depth, begin filling the hole with soil. Work the soil around the roots with your hands.  When the hole is half filled, tamp the soil to remove any air pockets.  Fill the planting hole with water and allow it to soak in. Straighten the plant in the hole and finish filling with soil.  Leave a saucer-like depression around the stems to allow for moisture accumulation and retention. Water thoroughly after planting. 

Potted - Dig a hole twice as wide and twice as deep as the pot in which your plant was grown.  Please note that many of our pots are biodegradable.  If your plant is not in a traditional plastic pot then you may place the entire biodegradable pot in the ground; otherwise, gently remove the rootball from the pot.  Partially backfill the hole with soil and place the plant into the hole. The top of the root ball should be level with the ground surrounding the hole. Refill the hole with soil, firming the soil around the plant with your fingers.  Check to be sure that the plant is not planted too deeply.  If it is, raise the plant carefully and refirm the soil.  Water thoroughly.

GET THE MOST ENJOYMENT

Whether planted together or spotted throughout the landscape, Rose of Sharon (Hibiscus syriacus) are outstanding ornamental shrubs that produce a medley of colorful flowers in the summer when the garden is in most need of color. They love the heat and perform best when grown in full sun to light shade in most any well-drained garden soil. Rose of Sharon will tolerate drought and thrive under harsh conditions in all areas of the country. They are ideal for planting in tubs or large containers and are a favorite food source for hummingbirds. 

SOIL PREPARATION

Although these plants will perform well in average garden soils of all types, we recommend having your soil tested periodically by the local County Extension Office.  These tests can determine if the soil needs any amendments to enhance your plants' growth and performance.  See below for our recommended practice to improve your soil without any additional testing:

1.  Spade or till the soil to a depth of 12-18 inches.

2.  To provide nutrients and improve drainage, add organic matter to your soil by mixing in a 2 to 4-inch layer of dehydrated manure, garden compost, shredded leaves, and/or peat moss.

3.  After active growth begins, periodically feed with Cottage Farms' water soluble Carefree Bud-N-Flower Booster. Plants in containers need more frequent watering and feeding, especially when in active growth and bloom.

CONTINUING CARE

Water - Your plants require 1" of rainfall (or equivalent watering) each week when planted in the ground.  Do not allow plants in containers to dry out.  In a container that is exposed to full sun, water it well at least once every other day, and possibly every day, during periods of intense summer heat.  You may wish to temporarily move containerized plants to an area where they are shielded from the hot summer sun (i.e., in the shade of a tree, on a porch near an overhang).

Mulching - Apply a 2-4 inch layer of shredded bark, compost or other organic mulch around your plants to promote moisture retention, maintain even soil temperatures, and to discourage weed growth.

Weeding - Keep the area around your plants free of weeds. Weeds compete with all plants for food, water and light. Walk around the garden periodically and pull weeds, including the roots, as soon as you see them.

Grooming - Remove flower heads as soon as soon as the flowers have faded in the summer to encourage continuous bloom.  At the same time, remove unwanted or undesirable branches and cut out weak shoots, particularly those inside or toward the center of your shrub.  

Feeding - Feed your plants once every 2-3 weeks during the growing season with a water-soluble fertilizer such as Cottage Farms' Carefree Bud-N-Flower Booster. Discontinue feeding after September 1st so your plants can harden off for winter dormancy. Resume fertilizing when new growth appears in the spring.

Winterizing - The time to protect your plants in the garden is after the ground has frozen. At that time, apply a winter mulch of evergreen boughs, straws or leaves to prevent lifting of the plant's roots during alternating periods of freezing and thawing.

For container planting, move plants next to your home's southern foundation for added warmth and protection.  They may also be moved into an unheated area such as a garage or cellar.  If moved indoors be sure you water them well once every 7 to 10 days.

In spring, remove the mulch from in-ground plantings.  Also, bring containerized plants back out into the garden sunlight where they will immediately begin to repeat their yearly garden performance.  

 

CAUTION: Not all plant material is edible. Though most plants are harmless, some contain toxic substances which can cause headaches, nausea, dizziness, or other discomforts. As a general rule, only known food products should be eaten. In case of ingestion, please contact your local poison control center at once and advise them of the plant ingested. Keep out of reach of children.