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California Poppy Seeds - Ivory Castle Eschscholzia californica

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Unit Size Unit Price Savings Qty
Packet $3.50
1 Ounce Package $11.95 Sold Out
1/4 Pound Package $26.95 44% Sold Out
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  • Perennial / Annual; Grows up to 16 Inches
  • Easy to grow and adaptable
  • Tolerant of sun or partial shade

Product Description

California Poppy Seeds - Ivory Castle -Eschscholzia californica

Delicate white blooms with a pale yellow center, Ivory Castle grow easily in cultivated gardens, but we enjoy them naturalized into wildflower plantings just as well!

  • Fast Facts

    Name:California Poppy - Ivory Castle
    Botanical Name:Eschscholzia californica
    Life Cycle:Annual/Perennial
    Color:White with Pale Yellow Heart
    Bloom Season:Spring/Summer
    Height:Up to 16 Inches
    Light Requirement:Sun
    Sowing Method:Direct Sow
    Seeds per Pound:Approx 293,000
    Hardiness Zones:All
    Ships:Year Around
  • Planting Instructions

    Poppy seeds need to be cold stratified to germinate. Learn how to cold stratify your seed here.

    Papaver Rhoeas act as perennials in moderate climates, but they perform as annuals where freezing temperatures and snow occur in winter. These poppies germinate most successfully in cool to moderate temperatures and they are, in fact, frost tolerant. Poppies flower best under cool spring weather conditions. Bloom decreases on poppies as temperatures increase in summer months.

    In growing zones 3 – 7, the Red Corn Poppy, Shirley Poppy – Mixed Colors and the Shirley Poppy – Mixed Double seeds can be planted in late autumn or early spring when a light frost is still possible.

    In zones 8 – 10, these poppy seeds should be sown in late autumn or winter.

    Poppies only need soil that is ordinary and moist, but well drained. The seeds should not be planted deeply; they just need to be compressed into the soil, as they need light to germinate. The best method for planting is to mix one part seed with 5 parts sand and scatter over the prepared growing area.

    These varieties of poppy seeds generally germinate in about 20 days. You can thin the seedlings to 6” to 8” apart after they emerge.

    If planting in rows, then plant the seeds 6” to 8” apart.

    Poppies do best if planted directly outdoors in their intended location rather than transplanting them. However, if necessary, they can be started in biodegradable peat pots indoors before the last spring frost. The entire peat pot can then be planted outdoors once the poppy seedlings are established.

    Poppies should be watered regularly, but they can tolerate dry conditions. It is not necessary to fertilize poppies.

    Red Corn Poppy and Shirley Poppy varieties can reach 2’ to 4’ in height at maturity with flowers up to 2” across.

    It generally takes about 60 to 90 days for poppies to bloom after the seed is planted. This timing depends very much on your growing zone and when you plant, along with Mother Nature’s cooperation. The bloom season for poppies is spring to summer. Poppy plants will bloom for a few weeks, but the length of bloom time can be extended by regular watering and application of mulch for moisture retention, as well as regular dead-heading of spent flowers. It is also recommended that the seed be sown in successive plantings to extend the bloom season of the poppies.

    Visit our Poppy planting guide page to learn more and watch planting videos.

  • Planting Video

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