Tips for Hydrangeas
How to Turn Pink Hydrangeas to Blue
• The flower color of macrophylla hydrangeas (mop heads or lace caps) is affected by the pH of the soil in which they are growing.
• Acidic soil with a pH of 5.5 or less produces blue flowers.
• Neutral to alkaline soil with a pH of 6.5 or higher produces pink flowers.
• It is best to do a pH test of the soil around the planting area to determine if amending the soil is necessary.
To Lower pH And Produce Blue Flowers
• Add a soil acidifier or aluminum sulfate to the area around the drip line of the plant.
• Fertilizing with a slow-release granular fertilizer for acid-loving plants such as Green Gro Acid Lovers or Holly-tone will also help to lower the pH.
• Soil acidifier can be added at the time of planting to the soil around the root ball, using the amount recommended on the package.
• For established plants, spread soil acidifier or aluminum sulfate evenly around the drip line of the plant, following package instructions and keeping it away from the stems. Then, water thoroughly.
• Results will not be immediate, usually 4-5 weeks, and may need to be repeated but not more than 2x per year.
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More About Hydrangeas om
Proven Winners®
Why We Love em:
• Stunning, long-lasting blooms from summer into fall
• Gorgeous color range: pink, blue, purple, white, and green
• Great for borders, hedges, and containers
• Attract pollinators and add curb appeal
Tips for Success:
• Sun Needs: Varies by Type. Morning sun + Afternoon shade is ideal for Macrophyllas & Quercifolia. Paniculatas can handle Full Sun
• Watering: Loves consistent moisture—don’t let them dry out
• Soil: Rich, well-draining soil
• Pruning: Timing depends on the type—ask us if you’re unsure!
Types We Carry:
• Bigleaf (Hydrangea macrophylla) – Color can change based on soil pH!
• Panicle (H. paniculata) – Hardy and sun-loving with cone-shaped flowers
• Smooth (H. arborescens) – Native and reliable, like ‘Annabelle’
• Oakleaf (H. quercifolia) – Unique foliage and dramatic blooms!