
Light Needs

Mature Height

Mature Spread

Growing Zones
Another bigleaf hydrangea, this one touts a cherry red to wine purple mophead flower depending on the alkalinity or acidity of your soil. It is a hyperaccumulator hydrangea, strangely reactive to the aluminum salts that naturally occur in your soil. It is this, among other minerals, that determine your soil’s pH range. How fun is that? In acidic soil, this lovely petite shrub will produce raspberry red blooms, and in alkaline soil, it will produce a wine red/purple bloom. Blooms start out the reddish color and age to an equally gorgeous and unusual green with red fringe color.
Native to Japan and Korea along the sea coasts, Hydrangea have naturalized in the Americas and began the love affair we have with these lovely flowering shrubs. Hardy in Zones 5 to 9, Heart Throb Hydrangea is a compact shrub, growing under 4 foot tall and wide at maturity. It maintains a rounded, mounded appearance and needs no pruning. It will grow in about any soil that is well draining and that has been amended to the particular needs these shrubs have for nutrient take up.
Heart Throb Hydrangea Care
Requiring moist, well drained soil with a rich fertile nutrient level, Hydrangeas will do well in amended clay, sand and loam soil. Requiring an average moisture level and benefiting from an even consistent moisture, water when natural rainfall is inadequate until it is fully established. Once established, this hearty and hale shrub will tolerate some drought conditions. As its native environment is a sea coast, mophead hydrangeas as a whole are relatively salt tolerant, allowing coastal gardeners to enjoy their beauty in that habitat, as long as the sandy soil is amended. If you are interested in manipulating the color tones of your hydrangea, you can apply an aluminum sulfate to acidify your soil, creating the cherry red color, and apply lime to create the darker purple/wine red blooms. You can even amend one side with the alkalizer and the other side with the acidifier to create a multi-toned flowering shrub. As with any chemicals, use care and follow manufacturer instructions for the use in your garden.
Deadheading is not needed as the giant mop heads will age to a caramel tan color and create a unique winter interest with its dried head. If you would like to harvest flowers for indoor floral arrangements, cut new growth only to avoid disturbing the formation of next year's blooms. Hydrangeas bloom on old wood at the beginning of spring, and rebloom on new growth in the late summer and fall. Mulch to protect root zone from winter frost heaving.
Heart Throb Hydrangea Spacing
Space your plants 30 to 48 inches apart to allow for good air circulation. If planting as a specimen plant, allow up to 60 inches of space. Maturing at about 36 inches tall and spreading out to 36 inches wide, you will not find another shrub as unique as the big leaf hydrangea for your springtime gardens.
Heart Throb Hydrangea Information
USDA Hardiness Zones: 5-9 |
Plant Type: Shrub |
Sunlight Exposure: Full Shade to Partial Shade |
Mature Height: 3 Feet |
Mature Width: 3 Feet |
Plant Spacing: 3 Feet |
Growth Habit: Compact |
Flower Color(s): Red |
Seasonal Interest: Summer through Fall |
Foliage Type: Deciduous |
Foliage Color(s): Green |
Resists: Disease, Pests |
Features: Cut Flowers, Fragrant, Low Maintenance, Continuous Blooming or Reblooming |
Uses: Accent, Border, Container, Edging, Low Hedge, Mass Planting |
Plant Brand: Southern Living |
Botanical/Scientific Name: Hydrangea macrophylla ‘Hortmagitri’ PP30044 |
- SKU:
- HTTHYD
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.
Starting January 1, 2025 all bushes, perennials & trees purchased 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 31th |
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: 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!