Silver Buffaloberry
Shepherdia Argentea
Shepherdia argentea, commonly known as Silver Buffaloberry, is a hardy shrub native to North America. Its silvery foliage and edible berries make it a unique addition to gardens, thriving in well-drained soils and full sun.
Everything it needs
9 essentials at a glance
Watering
Shepherdia argentea prefers well-drained soil and should be watered deeply but infrequently.
Water every 2-3 weeks during the growing season, allowing the top inch of soil to dry out between waterings. In winter, reduce watering to once a month. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and leaf drop.
Light
This plant thrives in full sun, requiring at least 6-8 hours of direct sunlight daily.
Ideal placement includes open areas with good air circulation. While it can tolerate partial shade, reduced light may affect fruit production and overall vigor.
Soil
Shepherdia argentea prefers sandy or loamy soil with a pH range of 6.0 to 8.0.
The soil should be well-draining to prevent waterlogging. A recommended potting mix includes a blend of sand, peat, and perlite to ensure adequate drainage.
Humidity
This plant is tolerant of low humidity levels but prefers moderate humidity.
To increase humidity, mist the leaves or place a humidity tray nearby. Signs of humidity stress include leaf curling and browning tips.
Temperature
Shepherdia argentea thrives in temperatures ranging from 20-90°F (-6 to 32°C) and is hardy in zones 3-7.
It can withstand cold temperatures but may require protection from extreme heat during summer months.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10, applying it once in early spring and again in mid-summer.
Signs of nutrient deficiency include stunted growth and yellowing leaves, indicating the need for fertilization.
Pruning
Prune Shepherdia argentea in late winter or early spring before new growth begins.
Use sharp, clean pruning shears to remove dead or damaged branches and to shape the plant. Deadheading is not necessary as it produces fruit.
Repotting
Repot every 2-3 years or when root growth becomes visible through drainage holes.
Signs it needs repotting include stunted growth and roots emerging from the pot. Choose a pot one size larger, and gently loosen the roots before placing it in fresh potting mix.
Propagation
Propagation can be achieved through seed, stem cuttings, or division.
For seeds, collect ripe berries in late summer, clean them, and stratify for 30 days before sowing in spring. For stem cuttings, take 6-inch cuttings in late spring, dip in rooting hormone, and plant in a well-draining mix. Division is best done in early spring.
When it's unhappy
Yellow leaves
Why it happens
Often caused by over-watering or nutrient deficiency.
How to fix it
Check soil moisture levels and reduce watering frequency. Fertilize with a balanced fertilizer if nutrient deficiency is suspected.
Leaf drop
Why it happens
Can occur due to under-watering or sudden temperature changes.
How to fix it
Ensure consistent watering and protect the plant from extreme temperature fluctuations.
Wilting
Why it happens
Typically a sign of under-watering or root rot.
How to fix it
Check soil moisture; if dry, water deeply. If root rot is suspected, remove the plant from the pot and inspect the roots, trimming away any that are mushy.
Poor fruit production
Why it happens
Insufficient sunlight or lack of pollination.
How to fix it
Ensure the plant receives full sun and consider planting a second specimen nearby to improve pollination.
Bacterial leaf spot
Why it happens
Caused by excess moisture and poor air circulation.
How to fix it
Improve air circulation around the plant and avoid overhead watering. Remove affected leaves to prevent spread.
Care through the year
Spring
In spring, prune any dead or damaged branches and apply a balanced fertilizer to promote healthy growth. Ensure consistent watering as new growth appears.
Summer
During summer, monitor soil moisture closely, watering every 2-3 weeks. Protect the plant from extreme heat and ensure it receives full sun.
Fall
In fall, reduce watering as the plant prepares for dormancy. Harvest any berries if desired, and consider mulching around the base to protect roots from cold.
Winter
In winter, water sparingly, about once a month, and protect the plant from harsh winds. Avoid fertilizing during this dormant period.
Toxicity & Safety
Shepherdia argentea is non-toxic to pets and children. However, ingestion of large quantities of berries may cause mild gastrointestinal upset.
Good to know
How often should I water my Shepherdia argentea?
Water your Silver Buffaloberry every 2-3 weeks during the growing season, allowing the top inch of soil to dry out between waterings.
What type of soil is best for Shepherdia argentea?
Shepherdia argentea prefers sandy or loamy soil with a pH of 6.0 to 8.0, ensuring it is well-draining to prevent root rot.
Can Shepherdia argentea tolerate shade?
While it can tolerate partial shade, Shepherdia argentea thrives best in full sun with at least 6-8 hours of direct sunlight daily.
When is the best time to prune Shepherdia argentea?
Prune your Silver Buffaloberry in late winter or early spring before new growth begins to maintain its shape and remove any dead branches.
How do I propagate Shepherdia argentea?
You can propagate Shepherdia argentea through seeds, stem cuttings, or division, with seeds requiring stratification before sowing in spring.
What are the signs of nutrient deficiency in Shepherdia argentea?
Signs of nutrient deficiency include stunted growth and yellowing leaves. Fertilizing with a balanced fertilizer can help address this issue.
Is Shepherdia argentea toxic to pets?
No, Shepherdia argentea is non-toxic to pets and children, although ingestion of large quantities of berries may cause mild gastrointestinal upset.
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