Henry Duelberg Salvia

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SEE HOW YOUR TREE ARRIVES

The Henry Duelberg Salvia features striking, spiky clusters of vibrant blue-purple flowers atop tall stems, adding a burst of color and a touch of elegance to any outdoor garden. Its long-lasting blooms and robust nature make it a beautiful and low-maintenance addition to your landscape.

Botanical name: Salvia farinacea ‘Henry Duelberg’
Other Common Names: Henry Duelberg Sage
Bloom time: Spring to fall
Herbacious perennial
Texas Native
Grown in the USA

SUNLIGHT
Prefers full sunlight. Provide at least 6 hours of direct sunlight daily for abundant blue flowers and dense, sturdy growth.

WATER
Water deeply at the base when the top 2–3 inches of soil begin to dry. During establishment, this is typically once or twice per week, keeping the soil evenly moist but not soggy. Once established, water less frequently, providing occasional deep watering during extended dry periods. Watering frequency will vary depending on climate, soil type, rainfall, sunlight exposure, and the tree’s establishment phase.

IDEAL CLIMATE
Hardy in USDA Grow Zones 7–10. Henry Duelberg Salvia thrives in hot, humid climates with long growing seasons and abundant sunlight. It performs well in drought-prone landscapes once established but requires freely draining soil.

PLANT DESCRIPTION & MATURE SIZE

Henry Duelberg Salvia, scientifically known as Salvia farinacea ‘Henry Duelberg’, is a vigorous Texas native perennial celebrated for its abundant spikes of deep blue flowers. This award-winning Texas Superstar® plant blooms from spring until frost, attracting bees, butterflies, hummingbirds, and other beneficial pollinators. Its exceptional heat, humidity, and drought tolerance make Henry Duelberg Salvia an outstanding choice for native gardens, xeriscapes, perennial borders, cut-flower gardens, and pollinator landscapes.

GROWTH RATE & MATURE SIZE:

Moderate to fast growth rate during warm weather. Reaches approximately 3 feet tall and 3 feet wide at maturity.

WATERING & SUNLIGHT

Water newly planted Henry Duelberg Salvia regularly until its root system becomes established. Once established, water deeply when the soil begins to dry; during peak summer, approximately one deep watering per week is generally sufficient when weekly rainfall totals less than 1 inch. Avoid persistently soggy soil, which may encourage fungal problems. Watering frequency varies according to USDA Grow Zone, local climate, rainfall, weather, temperature, soil type, drainage, and whether the plant is grown in the ground or a container.

Plant Henry Duelberg Salvia where it receives at least 6 hours of direct sunlight daily for the strongest growth and heaviest flowering. It tolerates partial shade, but plants grown with reduced sunlight may become looser and produce fewer flowers.

PLANT CARE & PLANTING INSTRUCTIONS

PRUNING
Remove faded flower spikes throughout the growing season to encourage continued blooming. Cut frost-damaged stems to the ground after the first hard freeze or before new growth emerges in spring.

FERTILIZING
Henry Duelberg Salvia generally performs well without heavy fertilization. After the establishment period, apply a general-purpose, slow-release fertilizer in spring and, if needed, a light second application in summer to support repeat flowering. Avoid excessive nitrogen, which can encourage weak, leafy growth. Avoid fertilizing for the first 2–3 months after delivery to allow the plant to adjust and establish.

WINTER PROTECTION
After the first hard frost, cut the dormant stems back near ground level and apply a 2–3-inch layer of mulch over the root zone. Keep mulch from collecting directly against the crown. Winter protection is especially important in Zone 7 and in areas subject to repeated freezing and thawing. In colder zones, grow Henry Duelberg Salvia as an annual or overwinter container-grown plants in a protected, frost-free location.

PLANTING INSTRUCTIONS:

Choose a location with full sun to partial shade and well-drained soil. Dig a hole approximately twice as wide as the root ball and no deeper than its height. Carefully remove the Henry Duelberg Salvia from its container, loosen tightly circling roots, and position the crown level with the surrounding soil. Backfill with the original soil, firm gently, and water thoroughly to settle the root zone. Space plants approximately 3 feet apart to accommodate their mature width and maintain healthy air circulation. Apply a 2-inch layer of mulch around the plant while keeping it away from the crown.

USDA GROW ZONE:

Zones 7-10

Henry Duelberg Salvia grows as a hardy herbaceous perennial in USDA Zones 7 through 10. It thrives in hot, sunny climates and performs exceptionally well under summer heat and humidity. Established plants tolerate drought and a range of soil conditions, provided the root zone drains properly. In regions colder than Zone 7, Henry Duelberg Salvia is generally grown as a warm-season annual or protected from severe winter temperatures.

Important: USDA Hardiness Zones only measure a plant's cold tolerance. They do not account for heat tolerance, humidity, rainfall, or other climate factors. Always consider your local growing conditions in addition to your USDA Zone when selecting plants.

Frequently Asked Questions

How big does Henry Duelberg Salvia get?

Henry Duelberg Salvia typically reaches approximately 3 feet tall and 3 feet wide at maturity. Its substantial size makes it best suited to the middle or back of perennial borders and pollinator gardens.

How fast does Henry Duelberg Salvia grow?

Henry Duelberg Salvia has a moderate to fast growth rate during warm weather. With abundant sunlight, warm temperatures, and adequate moisture during establishment, it can develop into a full flowering plant within one growing season.

Where is the best place to plant Henry Duelberg Salvia?

Plant Henry Duelberg Salvia in a sunny native garden, xeriscape, pollinator bed, cottage garden, or perennial border. Choose a location with good air circulation, well-drained soil, and enough room for the plant’s 3-foot spread.

How far apart should I plant Henry Duelberg Salvia?

Space Henry Duelberg Salvia plants approximately 3 feet apart, measuring from the center of each plant. This spacing allows mature plants to fill the area without becoming excessively crowded.

When does Henry Duelberg Salvia bloom?

Henry Duelberg Salvia blooms from spring until the first frost. Flowering may slow during extreme midsummer heat, but cutting the plant back can encourage a dense flush of fall blooms.

Is Henry Duelberg Salvia a perennial or an annual?

Henry Duelberg Salvia is an herbaceous perennial in USDA Zones 7–10. In colder regions, it is usually grown as a warm-season annual because its roots may not survive severe winter temperatures.

Is Henry Duelberg Salvia resistant to deer?

Yes. Henry Duelberg Salvia is considered deer resistant because its aromatic foliage is generally unappealing to browsing animals. No plant is completely deer-proof, especially when other food is scarce.

What pollinators does Henry Duelberg Salvia attract?

Its blue flower spikes attract native bees, butterflies, and hummingbirds throughout the growing season. The long bloom period makes Henry Duelberg Salvia especially valuable in pollinator and wildlife-friendly gardens.

Does Henry Duelberg Salvia spread or reseed?

Henry Duelberg Salvia may reseed after it becomes established, particularly where spent flower spikes are left on the plant. Unwanted seedlings are generally easy to remove or transplant, and deadheading can reduce self-seeding.

Can Henry Duelberg Salvia grow in a container?

Yes, but its mature size requires a large, stable container with unobstructed drainage holes. Use a well-draining potting mix, provide full sun, and expect container-grown plants to need more frequent watering than those planted in the ground.

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*SHIPPING DETAILS

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1 YEAR GUARANTEE

At Simply Trees, we're committed to your satisfaction. If your plants arrive considerably damaged or sustained damage beyond the point of recovery, please contact us within five days at sales@simplytrees.com with clear photos of the entire plant in question for assistance. Our 1 year guarantee covers issues after planting, subject to our terms. We can't cover plants in the wrong climate or with inadequate care, but we're here to help in other situations. For a detailed understanding of our 1 year guarantee and how we ensure a fair process, click here to learn more.

SHIPPING TO CALIFORNIA? HERE'S WHAT TO KNOW

All California orders require a mandatory inspection by the Texas Department of Agriculture (yep, it’s a USDA thing!). These inspections happen about once a week—typically on Tuesdays, though the day can vary. If you place an order just after an inspection, your plant may not ship for several days until the next one. Unfortunately, we’re not able to expedite this part of the process.

Also, due to USDA regulations, we’re unable to ship oak trees, citrus or fruit trees (except olive trees) to California. This rule helps prevent the spread of pests and diseases and applies to nurseries across the country.

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We hand-select our plants for premium-quality from top growers nationwide
Each plant is then cleaned, prepped, and pruned to remove any blemishes and encourage new growth
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We've perfected the art of packaging and shipping plants and trees! Unlike most online retailers, we handle everything in-house—no third-party fulfillment. Our experienced team carefully packages your plants to ensure they arrive from our farm to your door in perfect condition.