




🎨 Flowers that change hue throughout the season • 💙 From soft green to deep blue • 📅 Flowers from July until the first frosts • ⛅ Partial shade • ❄️ Hardy down to -23 °C • 🪴 Compact, sturdy growth
Hydrangea macrophylla Magical® Jewel Blue belongs to the Magical® series, whose flowers change color throughout the flowering period. A horticultural selection from Europe (the Netherlands), grown at the Kolster nursery, it is the only blue hydrangea with changing flowers among the shady balcony plants in the catalog.
Its large flower heads open lime green, become tinged with blue while retaining a green edge for a long time, then deepen in color at the end of the season. Delivered 55 cm tall in a 23 cm pot with 6 to 10 flower heads, it is lime green in July, blue with a green edge in August, then deep blue in September-October.
Which hydrangea should you choose?
The Hydrangea varieties in the catalog do not have the same flowering or the same uses:
- Magical® Jewel (this plant) — starts lime green and finishes deep blue. The most contrasting in the series.
- Forever & Ever® — repeat-flowering: it blooms again on the current year's shoots, even after a harsh winter or an unsuccessful pruning. The safest choice for flowering every year.
- Magical® Revolution — flowers that change color from July to October, a variety that has received an award from the Royal Horticultural Society. The most spectacular in late summer.
- Magical® Greenfire — pink flamed with green. The most tolerant of full sun.
- Magical® Noblesse — almond green, then pure white, then bright green. Best suited to shade.
- Magical® Ruby Tuesday — from green to intense red. The deepest red in the series.
- 'Pink Annabelle' — Hydrangea arborescens with large flower heads on sturdy stems, cut back hard every winter. The hardiest.
- Hydrangea petiolaris — the only climber, to cover a wall in the shade.
Magical® Jewel is also available in pink: Jewel Pink.
Light & location
Magical® varieties tolerate sun better than most hydrangeas, but the blue remains more intense and longer-lasting in partial shade, sheltered from the hot afternoon sun.
- Exposure: partial shade ideally, sun tolerated if watering is adequate.
- Location: balcony, east- or north-facing terrace, entrance, sheltered from strong winds.
- Hardiness in a pot: down to -23 °C — a winter protection fleece protects the buds in severe cold.
- Soil type: moist, rich and acidic — acidity is what preserves the blue.
The flowers' green edging stands out better in the soft morning light than in the midday sun.
Watering & care
Like all hydrangeas, it uses a lot of water in summer: an absence of a few days requires preparation, and leaves that turn yellow between the veins indicate water that is too hard.
- Watering: thorough and regular — every two to three days in summer, much less in winter.
- Water: rainwater or non-limescale water — hard water turns the blue pink.
- Fertilizer: fertilizer for blue hydrangeas or ericaceous plants, from March to July.
- Pruning: remove faded flowers in March, just above the first pair of buds.
- Repotting: into a wider pot the following spring, using ericaceous soil.
Do not cut the flowers during summer: each flower head passes through every shade, and it is this succession that makes the plant interesting.
Decor ideas & plant pairings
The blue edged with green is a fresh shade that blends with foliage and whites, brightening a balcony with little sun.
- For a blue and white duo, pair it with Hydrangea 'Strong Annabelle' — the same exposure, the same water requirements, and the white makes every shade of blue stand out.
- For a woodland composition, plant a Korean rock fern at its base — its dark, finely divided green foliage extends the flowers' green edging.
- For winter interest, place a Laurustinus next to it — evergreen, it flowers white from November to March while the hydrangea is dormant.
- To enhance the pot, choose the anthracite Capi Nature Skin pot — the dark gray intensifies the blue, whereas terracotta would warm it up.
At the end of the season, cut a few flower heads for a dried bouquet: they retain blue-green tones for several months.
Verdeia tips
- Repot it in ericaceous compost: the hydrangea's blue color comes from aluminum in the soil, which it only absorbs in an acidic environment. A suitable substrate and lime-free water preserve its original color.
- Let the flowers complete their cycle: it is at the end of summer that Jewel Blue takes on its deepest tones. Removing the flowers too early means losing what makes it distinctive.
- Protect it in severe cold: when grown in a pot, a winter fleece during prolonged frosts protects the buds that will flower the following summer.
Technical specifications
- Botanical name: Hydrangea macrophylla Magical® Jewel Blue
- Common name: Blue hydrangea with changing flowers
- Family: Hydrangeaceae
- Origin: horticultural selection from Europe (the Netherlands)
- Dimensions on delivery: H55 cm | Pot Ø23 cm, 6 to 10 flower heads
- Habit: bushy, compact and robust
- Adult height: approximately 1 m tall and 90 cm wide
- Flowering: from July until frost, lime green then blue edged with green, then deep blue
- Exposure: partial shade, sun tolerated
- Watering: generous and regular during the season
- Water: rainwater or non-calcareous
- Soil type: moist, rich and acidic
- Hardiness: down to -23 °C
- Foliage: deciduous
- Care: easy
- Toxicity: toxic if ingested by animals and children
- Decorative style: Country / Romantic / Terrace
Each plant is unique: the number of flower heads and the color stage at delivery naturally vary according to the season and the acidity of the substrate.
Your plant, delivered with care
Every plant is hand-packed in a box specially designed for plants — secured, protected, ready to travel. It arrives in perfect condition, roots intact and foliage preserved, ready to take its place in your home.
Our Verdeia commitments
FAQ – Everything to know before adopting your Verdeia plant
How are my plants prepared before shipping?
All our plants are selected from our European partner nurseries. Before shipping, they are watered, cleaned, and protected with breathable, secure packaging. Each package is designed to ensure your plant arrives in perfect health, without any transport-related stress.
Will the plant look exactly like the photo?
The photos accurately represent the variety and the stated size. Since each plant is unique, slight differences in shape, foliage, or color may occur — and that’s part of their charm.
What are the delivery times and conditions?
Orders ship within 48 working hours, with tracked delivery in 2 to 5 working days via DPD. Shipping costs and the free-shipping threshold depend on your country — see our delivery page. You receive a tracking link as soon as your parcel leaves.
What should I do when my plant arrives?
Open your package as soon as you receive it and carefully remove the plant from its packaging. Let it acclimate for 24 hours in its new environment before watering. If it has been slightly stressed during transport, it will recover its shape after one or two days in the light.
What should I do if my plant arrives damaged?
Contact us within 48 hours with a photo of the issue. Our team will assess the situation and offer you the best solution: replacement, partial refund, or recovery advice.
Can I return a plant?
Since plants are living beings, standard returns are not possible. However, we guarantee good health upon delivery: if the plant arrives damaged, it will be replaced free of charge. For any other cases (order error, decorative pot, accessory), returns are possible within 14 days.

