Royal Red Butterfly Bush (Buddleja davidii 'Royal Red') | Red-Purple Flowering Shrub

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Royal Red Butterfly Bush

Buddleja davidii ‘Royal Red’

A stunning, fast-growing butterfly bush with exceptionally long, fragrant, deep purple-red flower spikes that are a magnet for pollinators.

$16.90

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Bay Area–Based Nursery

We specialize in plants grown and delivered in their original pots and soil.
Because of their size and weight, our plants are not suitable for long-distance shipping and are delivered locally to ensure health and quality.

While delivery is limited to our local service area, we’re happy to support garden design and plant selection remotely.

For local plant professionals, we’re always glad to connect and explore ways to support your customers.

Buddleja davidii 'Royal Red' is a magnificent, fast-growing deciduous shrub prized for its showy, fragrant, deep purple-red flower spikes and its ability to attract a dazzling array of butterflies, hummingbirds, and bees . This classic cultivar produces dense, pendulous clusters of richly colored blossoms that bloom from summer through fall, with a notably upright, arching habit that is more compact and manageable than many taller buddleja varieties . Its long, curved panicles of velvety, reddish-purple flowers are exceptionally long and striking, making it a standout in the pollinator garden .

Nursery Plant Sizes Explained

Victory Nursery · Buying & planning

Choose your starting point.

A garden you can grow into, a fuller privacy screen, or a tree that makes an impression today. The right nursery size depends on your space, your timeline and how the plant will get there.

Compare our size guides, then check the individual plant for current options and availability.

Explore all 23 sizes Help me choose

Three measurements. Three different questions.

Container size

Gallon labels describe a nursery container category. Inch-pot labels describe top diameter; inch-box labels describe approximate box width. None tells you plant height.

Current plant size

Height, canopy width, trunk size and fullness describe the plant you are buying today. These vary by variety, growing conditions, season and pruning.

Mature plant size

The long-term height and spread help you plan the planting space. A larger container does not change the mature size of the same cultivar.

24 Gallon is not 24-Inch Box. These are different container descriptions, with no universal gallon-to-box conversion. Compare the actual plant, its form and its handling requirements.

When dimensions matter, ask for current measurements and available photos. Confirm whether a quoted height includes the container. Understand size labels and tree forms.

The complete size directory

Explore every starting size.

Choose a size below for a closer look. These are buying guides, not a live inventory list: every plant variety is offered in its own selection of sizes, subject to availability.

Start small. Give your garden room to grow.

For groundcovers, planting beds and projects where quantity and budget matter.

Mulflat

A shallow flat for spreading groundcovers. Plan by planting area, spacing and how the flat will be divided.

Explore Mulflat

1 Gallon

A compact starting size for perennials, grasses, groundcovers and young shrubs.

Explore 1 Gallon

2 Gallon

An option for smaller landscape plants when you want more than a small starter.

Explore 2 Gallon

3 Gallon

A versatile size for shrubs, perennials and young plants in garden beds.

Explore 3 Gallon

Find the balance between value and presence.

Compare these sizes for residential gardens, hedges, fruit trees and everyday landscape planting.

5 Gallon

A popular landscape starting size for shrubs, vines, privacy plants and young trees.

Explore 5 Gallon

7 Gallon

An intermediate option for shrubs, citrus and small trees, where offered.

Explore 7 Gallon

10 Gallon

A larger nursery pot for customers comparing starting size and installation needs.

Explore 10 Gallon

15 Gallon

Often chosen for more immediate presence in trees, larger shrubs and screening.

Explore 15 Gallon

Plan for a larger starting plant.

Confirm current measurements, weight and the route to the planting spot before selecting larger material.

20 Gallon

For established trees and larger shrubs. Review handling needs for the actual plant.

Explore 20 Gallon

24 Gallon

A large nursery container category. This is different from a 24-inch box.

Explore 24 Gallon

24-Inch Box

A common option for a stronger landscape focal point, canopy or screen.

Explore 24-Inch Box

30-Inch Box

An intermediate box size for projects seeking more scale. Arrange equipment and access review.

Explore 30-Inch Box

36-Inch Box

For substantial landscape presence. Coordinate delivery and installation before ordering.

Explore 36-Inch Box

48-Inch Box

A large specimen category. Treat plant selection, transport and placement as one project.

Explore 48-Inch Box

Choose by nursery pot diameter.

These inch labels refer to the approximate diameter across the top of the pot, not plant height. Ranges describe pot diameter ranges; confirm actual dimensions when fit or access matters.

6-Inch Pot

A 6-inch nursery pot describes approximately six inches across the top of the container. This category can include compact houseplants, herbs, young shrubs and perennials; the label describes the pot, not plant height.

Explore 6-Inch Pot

8-Inch Pot

An 8-inch nursery pot describes approximate top diameter. It can be used for houseplants, foliage plants and compact shrubs. Compare the actual plant if you are choosing between a 6- and 8-inch option.

Explore 8-Inch Pot

10-Inch Pot

A 10-inch pot is a diameter-based nursery category used for foliage plants, tropical plants and other container-grown specimens. Confirm plant height and spread separately when choosing a position in a room or on a patio.

Explore 10-Inch Pot

12-Inch Pot

A 12-inch nursery pot indicates approximate top diameter. It can hold established foliage plants, palms, ficus and other container-grown plants, with very different heights and canopy shapes depending on variety.

Explore 12-Inch Pot

14-Inch Pot

A 14-inch nursery pot is a larger diameter-based category often used for statement foliage plants and other established container plants. Pot diameter is only one part of the space the plant will occupy.

Explore 14-Inch Pot

21–24-Inch Pot

The 21–24-inch label describes a range of nursery pot top diameters. It is used for substantial shrubs, boxwoods and other specimen material. Confirm the specific container dimensions for the available plant.

Explore 21–24-Inch Pot

24–27-Inch Pot

24–27 inches identifies a nursery pot diameter range, not the width of the foliage. For boxwoods, topiary and specimen shrubs, ask for both container dimensions and the clipped or natural canopy width.

Explore 24–27-Inch Pot

24–30-Inch Pot

A 24–30-inch label covers a range of large pot top diameters. It is a container description for substantial landscape material, not a fixed measurement of plant height, canopy or root-ball weight.

Explore 24–30-Inch Pot

27–30-Inch Pot

27–30 inches describes a large nursery pot diameter range used for substantial shrubs, topiary and specimen plants. Confirm the available specimen and its access needs before placing an order.

Explore 27–30-Inch Pot

Choose for the result you want.

A garden that grows with you

For borders, groundcovers and larger planting quantities, smaller starts can help stretch the plant budget. Allow time for plants to fill in, and choose spacing for the variety.

Plan your spacing

Privacy and presence sooner

Compare current height, width and foliage density across available sizes of the same plant. A taller tree is not always a fuller screen. Larger material can provide more initial coverage, but gaps and growth rate still matter.

Understand growth and mature size

A focal tree or full landscape

For specimen trees, replacements and project orders, compare form, canopy and total installed cost. Share the plant list, quantities and desired effect so we can review sourcing and delivery together.

Explore trade & project support

Choosing a fruit tree? Consider the variety, rootstock where specified, branch structure and available space. Container size alone does not guarantee fruiting age or a harvest date.

Make sure the size works for your property.

Victory Nursery focuses on local plant delivery across the Bay Area and Greater Sacramento region, with availability based on your address and current routes. Larger plants and box trees need a handling plan as well as a planting spot.

Check the plant. Confirm container size, current height and canopy width. Ask about weight and handling requirements for large material.
Check the route. Share gate and driveway widths, stairs, slopes, overhead obstacles and the distance from the drop-off area to the planting location.
Confirm the services. Standard delivery is to an agreed accessible drop-off area. Backyard placement, planting and equipment are separate arrangements.
Plan the full budget. Include the plant, delivery, any installation help and equipment. Confirm availability and scheduling before booking your installation crew.

Do not decide how many people or what equipment you need from a gallon label alone. Plant weight, wet soil, height and site conditions all affect handling. Large box trees may require specialized equipment and advance access review.

Delivery information Mature & oversized trees Bulk & project delivery

A few helpful answers.

How tall is a 5- or 15-gallon plant?

There is no single height. A spreading shrub, compact maple and upright screening tree can look very different in the same container. Use the individual listing and current nursery measurements when height is important.

Is a larger size always a better choice?

No. Larger plants offer more initial presence, while smaller starts may suit your budget, access or willingness to wait. Compare the same variety, your available space and the total cost of getting it planted.

Does a gallon label mean an exact volume?

It is a nursery size category. Container dimensions and actual volume can vary by grower and manufacturer. Do not use the label alone to calculate soil volume or lifting weight.

What do Multi and Standard mean?

These describe plant form. Multi generally means multiple trunks or main stems; Standard generally describes a single trunk with a raised canopy. They are separate from container size. Confirm the form shown for the particular plant you are ordering.

Are all of these sizes available for every plant?

No. Size options depend on the plant and current supply. Check the product page or send us the variety, preferred size and quantity. We can review available options and sourcing needs.

Can you help with a matching row of trees or a larger order?

Send the variety, quantity, desired starting height, project location and timing. If consistency is important, include your expectations for form and fullness so we can review the available batch.

A little context makes a better recommendation

Show us what you are planning.

Send the plant or variety, quantity, ZIP code, desired starting size and target timing. Add photos of the planting area and access route, plus whether you need delivery only or help with planting.

We can help compare available sizes and identify the next step for your garden or project.

Ask Victory Nursery Plan a project order

Foliage & Flowers: Lance-shaped, dark green to gray-green leaves with a woolly texture; long, arching panicles (4-12 inches) of deep purple-red to magenta flowers with a sweet, honey-like fragrance .
Mature Height: 5-6 ft (if cut back hard annually, can be kept to 4-5 ft; or 6-8 ft if unpruned) .
Mature Spread: 4-6 ft .
Growth Rate: Fast .
Hardiness Zones: USDA 5-9 .
Light Requirement: Full sun .
Core Benefits: Spectacular long-blooming reddish-purple flowers, compact habit, excellent pollinator attractant, fast-growing, hardy, deer resistant .
Best Uses: Cottage gardens, wildlife and pollinator gardens, mixed borders, mass plantings, cut flower gardens, patio containers.

Q: How should I prune my Royal Red Butterfly Bush?
A: It blooms on new wood. Prune hard in late winter or early spring (March), cutting the previous year's growth back to within a few buds of the base . This encourages strong, vigorous new shoots and the most abundant flowering. In cold climates, it may die back to the ground but will regrow from the roots . Its compact, upright habit makes it a good choice for containers in colder zones .

Q: How much sun and water does it need?
A: It thrives in full sun (at least 6 hours per day). It is very adaptable to soil types but prefers a moist, well-drained location. Water regularly during the first growing season; once established, it is drought-tolerant .

Q: Is Royal Red Butterfly Bush invasive?
A: Yes, it can be invasive as Buddleja davidii self-seeds readily. To prevent unwanted spread, remove spent flower spikes before they set seed . It is classified as invasive in several US states, including Oregon, Washington, and California .

Q: Does it really attract butterflies?
A: Absolutely. It is one of the most renowned butterfly and pollinator plants. Its fragrant, nectar-rich flowers also attract hummingbirds, bees, and other pollinators throughout its long bloom season .