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Zinnia Giants of California

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A wonderful type that produces enormous, magnificent, flat-petalled, semi-double flowers of 12-15cm in diameter on robust plants that reach a height of 100 cm. A combination of colours includes cherry, orange, pink, purple, scarlet, and yellow.

Seed Quantity 50 Seeds

Type Half Hardy Annual

Genus Zinnia elegans

Sow Seeds Sow from late April under cover and keep at about 20 degrees until germinated or sow directly in June.  Zinnias hate root disturbance so don’t let them get too big before you transplant them.  Transplant into pots and grow on in cooler conditions.

Plant Out Acclimatise before planting out when all risk of frost has passed.  They are sun worshippers….they absolutely have to have full sun, don’t even think of planting them in the shade!  Water regularly but do not overwater.  Keep deadheading/cutting to encourage more flowers. 

Flowers July-September

Height & Spread 60cm high x 30cm spread

Zinnia Giants of California   =

RHS Plants for Pollinators.

The RHS Plants for Pollinators mark is only given to plants that support pollinating insects.

Find out more at

    Assorted Zinnia Giants of California flowers arranged in a basket on a rustic wooden surface
    Unique Zinnia Giants of California bloom featuring red petals with distinctive white striping
    Close-up of a Zinnia Giants of California flower with vibrant red petals and a prominent yellow center

    Customer Reviews

    Based on 1 review
    Beautiful colours

    Absolutely love these flowers…they were very easy to grow and now they have flowered are a beautiful range of colours and very large heads..more ordered for next year.. I recommend these if you love bright showy blooms…

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    • Fast Dispatch

      We aim to dispatch all orders within 24hrs of receiving them

    • Packaging

      Seeds are delivered in eco friendly packaging and thick card envelopes.

    • Returns

      We offer a full refund on items returned in their original packaging