
Light Needs

Mature Height

Mature Spread

Growing Zones
Like other lilacs, the Declaration is beloved in landscapes for its fragrant, attractive flowers and versatility as a shrub. In this case, the plant’s cone-shaped blooms appear up to a foot long and are a striking reddish-purple. Additionally, the Declaration lilac has a smaller, denser form than most other lilacs and only grows 7 to 9 feet wide and tall. This fairly compact form and a relatively early bloom time makes the Declaration an excellent choice for a specimen plant or screen planted where its flowers can be appreciated.
This deer-resistant lilac hybrid is an excellent producer of cut flower flowers, which attract hummingbirds and butterflies. The Declaration has deep green, heart-shaped leaves that combine with the fragrant spring blooms to make it a candidate for flowering hedges. It also works well as a specimen or to provide structure in a perennial bed.
Declaration Lilac Care
The Declaration Lilac requires at least half a day of full sun and will perform best in a site that receives full sun. It tolerates a range of soil types but prefers a moist but well-drained site that is fertile and has a neutral or alkaline soil. Plan to water once or twice per week during dry spells for the first year or two after planting; once established the lilac may only need occasional irrigation during extended hot, dry conditions.
Perform annual lilac pruning after flowers fade. Cut off spent flower panicles and remove any broken, misshapen, or unproductive stems or unwanted suckers at the base and otherwise shape the plant as desired. Lilacs flower on growth from the previous summer, so waiting too late to prune after flowering will affect the next year’s blooms.
Declaration Lilac Spacing
The Declaration is smaller than most other lilacs, and has a medium growth rate, but may take 25 years to reach its full height and spread. Space these plants about 96 inches apart as specimen plants or a bit closer together to form a hedge faster, but remember that the plant prefers good air circulation.
Declaration Lilac Information
USDA Hardiness Zones: 5 - 8 |
Plant Type: |
Light Exposure: Partial Sun to Full Sun (At Least 5 Hours of Direct Sunlight) |
Mature Height: 7 - 9 Feet |
Mature Spread: 7 - 9 Feet |
Spacing: 7 - 9 Feet |
Habit: Upright |
Flower Color(s): Purple |
Flower Description: |
Bloom Period: Spring |
Foliage Type: Deciduous |
Foliage Color(s): Green |
Foliage Description: |
Seasonal Interest: Spring Flowering |
Watering: Average |
Resists: Disease |
Tolerates: Heat, Drought |
Attracts: Butterflies, Hummingbirds |
Container Role: |
Uses: Borders, Hedges & Privacy, Mass Planting, Wildlife Gardens |
Features: Attracts Pollinators, Cut Flowers, Low Maintenance |
Brand: |
Common Name: Declaration Lilac |
Other Name(s): |
Scientific Name: SYRINGA X HYACINTH. `DECLARATION` |
- SKU:
- 1231005308-pc
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.

Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts

Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts

Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts

Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons

Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons

Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons

We stand behind our plants with industry-leading guarantees to give you peace of mind.
We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
All bushes, perennials & trees come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.

Pre-ordered plants are scheduled to ship in Spring 2025. We carefully plan our shipping dates based on your USDA Plant Hardiness Zone to ensure optimal planting conditions upon arrival. Want it sooner/later? Reach out, and we'll try our best to accommodate.
Estimated ship week for pre-ordered plants will ship based on growing zones as shown below.
Growing Zone | Estimated Ship Week |
---|---|
Zone 10 | March 24th |
Zone 9 | March 31st |
Zone 8 | April 7th |
Zone 7 | April 14th |
Zone 6b | April 21st |
Zone 6a | April 28th |
Zone 5b | May 5th |
Zone 5a | May 12th |
Zone 4 | May 19th |
Zone 3 | May 26th |
Note: These are only estimated ship dates. Plants may ship out later depending on weather & growing conditions of the plant.
Note: Only plants indicated as pre-order will ship as shown above. All other plants and hard goods will ship as normal.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: Idaho, AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!