Next Day delivery when ordered before 3pm.

21st Birthday Flowers & Gifts

Celebrate a 21st Birthday with our collection of flowers through the post straight to your door. Whether you are going all out with luxury flowers, we have something to mark their special day with our collection of 21st birthday flowers.

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  • The Hot Pink Rose Bouquet - Flower Bouquet - The Blossomist The Hot Pink Rose Bouquet - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Hot Pink Rose Bouquet

    (1)
    Regular price £48.00
  • Birthday Flowers and Birthday Card Gift Set - Bundle - The Blossomist Birthday Flowers and Birthday Card Gift Set - Bundle - The Blossomist
    Hand-Tied

    The Blossomist

    Birthday Flowers and Birthday Card Gift Set

    Regular price From £36.20
  • Gift Subscription - The Blossomist

    Flower Subscriptions

    Fresh flowers on the regular. The perfect gift for any occasion.

    Learn More
  • The Linen Luxury Bouquet - Flower Bouquet - The Blossomist The Linen Luxury Bouquet - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Linen Luxury Bouquet

    Regular price £79.00
  • Highgrove Cards

    21st Birthday Card

    Regular price £3.20
  • The Secret Garden - Flower Bouquet - The Blossomist The Secret Garden and Coastal Walks Diffuser - Bundle - The Blossomist
    Hand-Tied

    The Blossomist

    The Secret Garden

    Regular price From £45.00
  • The Mist - Flower Bouquet - The Blossomist The Mist - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Mist

    (1)
    Regular price From £36.00
  • The Showstopper Bouquet - Flower Bouquet - The Blossomist The Showstopper Bouquet - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Showstopper Bouquet

    (3)
    Regular price £82.00
  • Pink Avalanche Roses - Flower Bouquet - The Blossomist Pink Avalanche Roses - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    Pink Avalanche Roses

    (1)
    Regular price From £39.00
  • Letterbox Flowers - Floral Surprise - Flower Bouquet - The Blossomist Letterbox Flowers - Floral Surprise - Flower Bouquet - The Blossomist
    Letterbox

    The Blossomist

    Letterbox Flowers - Floral Surprise

    (3)
    Regular price £27.00
  • The Cottage Garden - Flower Bouquet - The Blossomist The Cottage Garden - Flower Bouquet - The Blossomist
    Letterbox

    The Blossomist

    The Cottage Garden

    (2)
    Regular price £34.00
  • The Blush - Flower Bouquet - The Blossomist The Blush - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Blush

    (4)
    Regular price From £38.00
  • The Golden Hour - Flower Bouquet - The Blossomist The Golden Hour - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Golden Hour

    Regular price From £46.00
  • Letterbox Pink Roses - Flower Bouquet - The Blossomist Letterbox Pink Roses - Flower Bouquet - The Blossomist
    Letterbox

    The Blossomist

    Letterbox Pink Roses

    Regular price £32.00
  • Floral Surprise - Flower Bouquet - The Blossomist Floral Surprise - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    Floral Surprise

    (2)
    Regular price £44.00
  • The Blushing Blooms - Flower Bouquet - The Blossomist The Blushing Blooms - Flower Bouquet - The Blossomist
    Hand-Tied

    The Blossomist

    The Blushing Blooms

    (1)
    Regular price From £33.00
  • The Margot - Flower Bouquet - The Blossomist The Margot - Flower Bouquet - The Blossomist
    Letterbox

    The Blossomist

    The Margot

    (1)
    Regular price £29.00

Celebrate a 21st Birthday:

Celebrate a major milestone in style with our collection of 21st birthday flowers. Whoever you're marking the occasion for, our luxury hand-crafted birthday flower arrangements are the perfect way to show appreciation and make their day truly special.

From elegant roses and lilies to vibrant mixed blooms, every bouquet is arranged by and hand-tied by our expert florists, and delivered with care.

With next-day nationwide flower delivery, you can send 21st birthday flowers anywhere in the UK quickly and reliably, even at the last minute.

Shop our stunning 21st birthday flowers today and deliver a thoughtful, memorable gift that’s right on time.

Frequently Asked Questions

What flowers are best for a 21st birthday?

Bright, celebratory blooms tend to work best for a 21st. Think bold colours and fun textures rather than anything too formal. Our Floral Surprise letterbox flowers (£27) are a popular choice for exactly this occasion, and for a bigger statement, The Cottage Garden (£34) brings a livelier, more playful mix of roses, snapdragons and astrantia.

Do you deliver 21st birthday flowers UK-wide?

We deliver across the UK. Order by 3pm for next day delivery, so a last-minute 21st doesn't have to mean last-minute flowers.

What's the difference between letterbox flowers and a hand-tied bouquet for a birthday?

Letterbox flowers fit straight through the door, so there's no waiting in and no risk of a missed delivery. A hand-tied bouquet, like The Showstopper (£82) or The Linen Luxury Bouquet (£71), needs someone in to receive it but makes more of a statement, which suits a milestone birthday well.

How much should I spend on 21st birthday flowers?

There's no fixed rule, but our range spans from £27 letterbox flowers up to £82 for a larger, more luxurious bouquet. For a milestone birthday like a 21st, many customers choose something a little more generous than an everyday bouquet.

Can I add gifts or chocolates to 21st birthday flowers?

Yes. Alongside your flowers, you can add extra treats at checkout, including chocolates, candles and diffusers, or choose one of our ready-made gift sets. It's an easy way to make a 21st feel a little more special without needing to order separately.