Greenstem forsythia (Forsythia viridissima)
Also known as: Greenstem Forsythia, Korean Forsythia
Greenstem forsythia (Forsythia viridissima) is a deciduous shrub native to Asia, known for its rapid growth and dense clusters of flowers. Often referred to as Korean greenstem forsythia, it is commonly used for ground cover to maintain soil health and inhibit weed growth, and it can be grown indoors in containers as well. A notable variety of this species, named 'Bronxensis,' was initially cultivated at the Bronx Botanical Garden in 1939 from Japanese seeds.
In This Article
Attributes of Greenstem forsythia
Lifespan
Perennial
Plant Type
Shrub
Plant Height
3 m
Spread
60 cm to 90 cm
Leaf Color
Green Yellow
Flower Size
2.5 cm to 5 cm
Flower Color
Yellow Gold
Images of Greenstem forsythia
Quickly Identify Greenstem forsythia
1
Vibrant yellow flowers bloom before foliage, with four lobed petals uniquely joined at base.
2
Distinctive dry capsules with rough texture and winged seeds for wind dispersal.
3
Opposite, simple leaves with toothed edges, pinnate veins, and purple tinge in fall.
4
Square stems with pronounced lenticels, transitioning from green to brown, aiding gas exchange.
5
Robust trunk with rough-textured bark, grey-brown hue, fissured surface for tactile identification.
Scientific Classification of Greenstem forsythia
Phylum
Vascular plants
Class
Dicotyledons
Order
Mints plantains olives and allies
Family
Olive
Genus
Easter tree
Species
Greenstem forsythia
Planting and Growing of Greenstem forsythia
Care Difficulty
Easy
Watering Schedule
Every 3 days
Sunlight Requirements
Full sun
Sunshine Duration
6-10 hours
Ideal Temperature
60-75℉
Soil Type
Potting Mix, Peat Mix
Soil pH
6.5-7.5
Fertilizer Type
Balanced
Pruning Season
Spring, Summer
Pruning Area
Branches, Leaves
Pruning Frequency
2 times a year
Repotting Season
Spring
Pot Type
Plastic, Ceramic
How to Water Greenstem forsythia?
For Forsythia viridissima, it's essential to water thoroughly, ensuring the soil around the roots is well-drenched without creating a swampy environment. You'll typically need about 500 milliliters per session, gauging by the plant's needs and environmental conditions.
More About Watering Techniques→
What are the symptoms of an underwatered Greenstem forsythia?
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What should I do if my Greenstem forsythia is not getting enough water?
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What are the symptoms of an overwatered Greenstem forsythia?
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How to save an overwatered Greenstem forsythia?
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What Are the Sunlight Requirements for Greenstem forsythia?
Forsythia viridissima prefers full sun to partial sun, ideally receiving 4 to 6 hours of sunlight daily. This light range strengthens its structure, encourages flowering, and supports overall vitality.
More About Sunlight Requirements Techniques→
Does Forsythia viridissima prefer direct sunlight?
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How do I provide optimal light conditions indoors for Forsythia viridissima?
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What benefits does Forsythia viridissima gain from ideal lighting?
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What Is the Ideal Temperature Range for Greenstem forsythia?
Forsythia viridissima thrives best in an environment where the temperature ranges between 60°F to 75°F. This range ensures optimal growth, flower production, and overall plant health. Temperatures within this range allow the plant to maintain metabolic processes efficiently, promoting robust development.
What Soil is Best for Greenstem forsythia?
Forsythia viridissima thrives best in soil that is well-drained to prevent excess water from saturating the roots. Well-drained soil helps avoid root rot by letting water easily pass through, ensuring the roots have access to necessary oxygen. This plant benefits greatly from nutrient-rich soil, which provides essential minerals and elements needed for healthy growth and vibrant blooms. The presence of organic matter in the soil supports overall plant vigor and flowering. Forsythia viridissima prefers a moderate pH range between 6.5 and 7.5. Maintaining the pH within this range ensures optimal nutrient availability and overall plant health, reducing the risk of nutrient lock-out.
More About Soil→
How to Fertilize Greenstem forsythia?
Forsythia viridissima, known for its vibrant green stems, requires thoughtful fertilization. For liquid fertilizers, use a balanced 10-10-10 formula. Administer approximately 1 tablespoon per gallon of water, ensuring consistent nutrient provision during the growing season.
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How to Prune Greenstem forsythia?
Start by removing any dead or damaged branches close to the base. This step keeps the Forsythia viridissima healthy and prevents disease. After the flowers have faded, cut back the stems to just above a healthy set of leaves or buds. This helps stimulate new growth and more vibrant flowers for the following spring. Thin out some interior branches to allow for better airflow and sunlight penetration. This not only keeps the plant healthy but also enhances flower production.
More About Pruning Techniques→
How to Propagate Greenstem forsythia plant?
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Choose healthy, disease-free stems as these increase the chances of successful rooting and subsequent growth of the new plants.
2
Cuttings should be 4-6 inches long. Remove leaves from the lower half to prevent rot and allow room for rooting.
3
Insert the cut end of the cutting into a well-draining potting mix, ensuring at least two nodes are buried for optimal root development.
How to Repot Greenstem forsythia plant?
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Look for signs like roots emerging from drainage holes or slowed growth. These are indicators that Forsythia viridissima requires more space or fresh nutrients that a new pot can provide. Repotting in spring or autumn ensures optimal growth.
2
Choose a pot that is one size larger than the current one. A pot with good drainage ensures excess water escapes, preventing root rot. Opt for materials like clay to support aeration, promoting healthier root growth.
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Select a well-draining potting mix, ideally containing sand or perlite. This prevents water logging and ensures that the roots receive adequate air circulation, promoting robust growth and flowering.
