Product Code: harbo

Hydrangea Arborescens (Hydrangea arborescens 'Grand')
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Our Snowhill hydrangea is a large, creamy white flower. It's quite large growing to around 8" across. This hydrangea shrub likes a heavier soil. This is resistant to Japanese beetles. Be sure to prune to a few inches above ground each spring. This plant matures to around 4-5' tall.

Planting & Care for Hydrangea Plants/Shrubs


  • These shrubs need damp soil high in organic matter.
  • Improve poor soil areas by digging in plenty of well-decayed manure or compost a few month ahead of planting.
  • Hydrangeas can be planted March-November.
  • Pick a spot that has dappled sunlight or morning sun and afternoon shade.
  • Make sure they are sheltered from frosty winds, which will damage blossoms.

Opening Plant Material

  • Completely saturate all container plants by putting in a larger container of water until stops bubbling, then remove the plant from the container. 

Opening Plant Material

  • Bare Root - Cut open the bundle (top and roots are tied) and separate all the plants. Soak roots in buckets of water until planted. Each plant type will be labeled separately for identification. Do not expose the roots to sun. They should never dry out. Keep roots covered. All bare-root plants must be trimmed when planted. 

Planting Bare Root

  • Dig a hole at least 6" wider and the same depth as the root mass. The crown or graft of the plant should be slightly higher than ground level where it was grown at the nursery.
  • Trim off the broken roots and branches.
  • Place fertilizer packets in hole (if purchased). Do not place other fertilizers in the planting hole. *Use Our Recommended Fertilizer.
  • Spread the roots and fill halfway with soil, then water until soil settles completely saturating the soil and planting pit.
  • Re-adjust plant and fill the hole with the rest of the soil.
  • Back fill the balance of the soil and water well. 

Pruning - After Planting

  • Bare Root - Prune ALL bare root plants to reduce transplant shock and ensure success. Pruning should occur either before or as soon after planting as possible. All pruning should be done with a sharp pruning shears.

Pruning - Through-out the Season

  • Follow these pruning tips for your specific type of hydrangea: 
  • Hydrangea macrophylla - Cut off spent flowers in spring and remove crowding shoots. 
  • Hydrangea paniculata – Prune stems to within two buds of the base in late March.
  • Hydrangea petiolaris – Cut out unwanted shoots when flowers fade. Remove a third of older stems in sping.

Watering - After Planting

  • Plants typically take approximately 6 weeks to establish new roots in your soil. During this period, water plants as often as every 2-4 days at the start and at least a minimum of once per week.
  • Beyond the 6 week establishment period, water once per week, unless rains occur.
  • Stick your finger into the soil around 3” to check soil moisture.

Watering - Through-out the Season

  • After the first season, plants should only be watered during extended periods without rain.
  • How do you know if your plants need water? The easiest way to tell is to touch the soil around the roots. If it is moist, there is no need to water. If it is dry, give it a good soaking with the hose end (no nozzle) watering the soil only, not the leaves.
  • Stick your finger into the soil around 3” to check soil moisture.


Go to our "Plant Features & Video Tab" for more information and tips on this plant. 

Handling & Planting Guidelines

Special Features & Videos on Hydrangea Plants/Shrubs

Special Plant Features & Tips

  • Plant March-November
  • Apply acidifying fertilizer like sulfate of ammonia in spring and midsummer to ensure a steady release of plant foods and encourage blue flowers.
  • Make sure they are sheltered from frosty winds. Make sure to always check the label before adding anything to your soil. 
  • These may not bloom on new wood. 
  • Excessive lime prevents chlorophyll from forming and causes leaves to yellow and die. Overcome it by applying iron chelates.
  • Mass or group in part shade areas of the mixed shrub border, woodland garden or as background for a perennial border. Naturalize in woodland or native plant gardens. Named cultivars often make showy specimens.

How to plant containers 


How to Prune Hydrangea Shrub Types


ItemApprox Weight (lbs.)Approx Base Dimensions (diameter)Approx Height
#7 Grow Bag** 35-50 14-16" 5-8'
#10 Grow Bag** 55-70 18" 6-8'
#15 Grow Bag** 65-80 22" 6-10'
#20 Grow Bag** 75-100 24" 8-12'
1 1/4" B&B** 250-500 22" for single stems, 28" for multiple stems  8-11'
1 1/2" B&B** 325-600 24" for single stems, 30" for multiple stems  10-12'
2" B&B** 500-700 28" for single stems, 32" for multiple stems 10-14'
2 1/2" B&B** 600-1000 30" for single stems, 36" for multiple stems 10-15'
3" B&B** 850-1000 34"-36"  12-16'
3 1/2" B&B** 1000 36"  12-18'
10' B&B** 250 22"  10'
12' B&B** 325 24"  12'
14' B&B** 500 28" 14'
16' B&B** 600 30"  16'
2' B&B** 50 12-16"  2'
3' B&B** 60-250 16-22"  3'
4' B&B** 250 22-24" 4'
5' B&B** 325 22-24"  5'
6' B&B** 150-325 16-24" 6'
7' B&B** 500-700 28-32"  7'
8' B&B** 600-700 14-30"  8'
9' B&B** 700 32"  9'
#3 container* Less than 35  10" 10" 
#5 container** 40 11" 10.5" 
#7 container** 60 14" 12" 
#10 container** 80 14" 14 
#20 container** 160 19.5" 17" 
Bare Root* varies, but always lighter no soil on roots varies depending on item

*#1 - #3 containers and bare root are the only items that can be shipped FedEx and/or by our delivery trucks (see below for more information regarding pick-up and local delivery. 

**Any items over 100 Ibs., #5 - #20 containers or B&B can only be delivered by our trucks due to FedEx shipping weight and size restrictions. Our trusted trucks only deliver around a 100 miles radius from our corporate office in Waterloo, Wisconsin. Any item you order can be picked-up at our corporate office in Waterloo, Wisconsin or our new retail garden center Winterland Nursery for free (bare root orders cannot be picked up at Winterland due to lack of bare root coolers). See our estimated delivery schedule here

Growing Zones: 4-8

Bloom Time: June-September
Color: Green, White
Plant Size: 6-8' tall
Flower Color: Milky White
Sunlight: Full Sun to Partial Shade
Soil Conditions: Normal, Sandy, Clay, Acidic, Dry
Low Maintenance: Yes
Deer Resistant: No
Attracts Butterflies: Yes
Attracts Bees: Yes
Attracts Birds: No
Edible: No
Native: No

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