When to Plant Hydrangeas?

When to plant hydrangeas?

The perfect timing for planting hydrangeas

Hydrangeas are popular garden plants because of their abundant blooms in beautiful colors like blue, pink, and white. But when is the right time to plant these bloomers? That depends on whether you're planting them in the ground or in a greenhouse.

Want to plant hydrangeas in the ground? Spring—from March through May—is the best time, just after the worst of the frost has passed. The soil then starts to warm up again, which gives root growth a boost. A rainy day is ideal: it helps the roots establish themselves more quickly.

Planting hydrangeas in a greenhouse

In a greenhouse, hydrangeas benefit from a more stable microclimate. Therefore, you can start planting a little earlier, for example, in February, as long as the temperature in the greenhouse isn't below freezing. Later in the year is also possible. You can easily plant hydrangeas in a greenhouse until the end of September, because the temperature stays warmer for longer than outside.

Good air circulation and avoiding water stress are essential in the greenhouse. Ideally, use airy, well-draining potting soil. Our potting soils for indoor and outdoor plants are an excellent choice to ensure your hydrangeas start with a healthy root structure.

Which type of hydrangea should you choose?

Farmer's hydrangea (Hydrangea macrophylla)

The most well-known hydrangea is the Farmer's Hydrangea. It blooms best in a spot with some morning sun and afternoon shade. It's best to plant this variety in spring so the flower buds have enough time to develop.

Do you have a greenhouse? Then you can still plant them in late summer, but be careful: sufficient watering is essential. Make sure you don't place them in the bright midday sun, as they don't like it. A plant mister will help maintain humidity in warm weather.

Panicle Hydrangea (Hydrangea paniculata)

This variety is slightly more robust and cold-resistant. You can plant them in the ground from March to October. Avoid periods of prolonged drought or heat waves: planting is best after a light rain shower or when the soil is still moist from previous rainfall.

A slightly sunnier spot in the garden is no problem for this species. It's ideal if you're looking for a colorful corner where other plants find it too hot. You can also choose to plant them in a decorative pot, which is handy with our collection of flower pots .

Tree hydrangea (Hydrangea arborescens)

Popular for their large, spherical flowers, such as the well-known 'Annabelle'. It's best to plant these in the open ground in spring or early autumn, allowing the roots to settle before the main growing season begins. For additional tips on similar varieties, read our blog post about when to plant Annabelles .

Hydrangeas prefer fresh, fertile soil. Consider adding some perlite to loosen the soil in wet conditions. This prevents root rot during heavy rain.

Where and how do you plant hydrangeas?

Choosing the right place

Hydrangeas prefer partial shade with plenty of morning light. Avoid hot, dry spots against a south-facing wall. Also, ensure the chosen location remains sufficiently moist, but the roots should not be constantly soaking in wet soil.

Do you have a border in full sun but still want some color? Consider insect-friendly protection and mulch to retain moisture longer. This helps the plant establish itself better.

Planting instructions in open ground

Dig a planting hole twice as wide as your hydrangea's root ball. Mix some compost or organic fertilizer into the dug-out soil. Plant the plant at the same depth as it was in the pot and press the soil firmly. Water thoroughly—it's better to water thoroughly once, rather than a little every day.

For those who really want to give their garden a makeover, our handy repotting mat is a must-have. Want to repot cleanly and neatly without covering half your driveway with soil? Absolutely!

Planting hydrangeas in pots

Would you prefer them in a pot on your patio or balcony? No problem! Then be sure to choose a spacious flowerpot with drainage holes. Fill it with airy potting soil, for example, our potting soil mix for anthuriums as an alternative. It retains moisture well but prevents wet feet.

Place the pot on a coaster to allow water to drain, especially during summer showers. You can also add a plant life support system to keep your plants happy while on vacation.

What after planting?

Caring like a pro

Give hydrangeas a generous amount of water just after planting, and repeat regularly during dry spells. Good care is essential for root development, especially during the first few weeks. After that, hydrangeas require little more than occasional watering and adding some compost annually.

Want to enjoy your flowers for a longer period? Then pruning on time is important. You can cut back panicle and tree hydrangeas in late spring, while pruning hydrangeas is best done sparingly to avoid removing flower buds. You can also read more about pruning timing for each variety in our other plant tips .

A bonus for indoors: mini hydrangeas as houseplants

Prefer to keep hydrangeas indoors? Then choose a compact variety. Although less common, there are beautiful small specimens that bloom indoors temporarily. If you love tropical leaves, consider an alternative like the Ficus Elastica Tineke or the popular Alocasia Zebrina .

If you want a unique plant with striking leaves like a hydrangea, the Monstera Minima is also a good choice.

To blossom

Proper preparation when planting hydrangeas ensures years of color in your garden. Choose the right time of year, give them the spot where they thrive, and don't forget to give them a little extra attention during the first few weeks.

Want to know more about the best planting times for other flowers? Then check out our comprehensive guides on when to plant flower bulbs or when to plant geraniums . This way, you can create a garden in all its glory every season!