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The first of our overwintered Zantedeschia opened its first blossom this morning. I might have missed it, had I let the misting rain keep me indoors. This cool, foggy morning coaxed me outside to do a little planting; a little moving of pots from their protective shade into their permanent summer spots.
Feet damp, and camera covered in raindrops, I was taking a quick turn around the upper garden when the pure white elegance of it caught my eye.
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Zantedeschia albomaculata is named for the white spots on its leaves. Spotted leaf calla lilies want wetter soil than those without spots. Both want full sun, and reward good care with elegant flowers.
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Zantedeschia looks so tropical. And yet, they survive our winters, here in the northern reaches of their hardiness zone (Zones 7-10). Their elegant leaves never fail to surprise me when they finally emerge each spring. The leaves would be enough, some would say. That is, until their blossoms begin to appear.
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Zantedeschia ‘Memories’ will have deep purple flowers when it blooms.
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Although we have Zantedeschia blooming in shades of purple, pink, rose, peach and white in the garden; the pure white flowers remain our favorites.
Many people call these flowers ‘calla lily,’ especially when ordering stems from the florist. There is actually a North American Calla palustris, which grows in bogs, swamps and ponds. A near relative, it looks very similar, but is not as refined.
The newest Zantedeschias in our collection are called Z. aethiopica ‘White Giant,’ and may eventually grow to 5′ to 6′ tall in good soil and consistent moisture.
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Z. ‘White Giant’ is still a very young plant in our garden. We expect the leaves to grow larger as the weeks go by, and hope it will bloom this first year. Here, it grows with Caladium ‘Burning Heart.’
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Like this beautiful blossom in form and color, they will grow more like the tremendous clumps of white Zantedeschia aethiopica I’ve admired in front gardens in coastal Oregon, where the hardy clumps expand a bit each year. Mature clumps grow 3′-4′ tall there, already blooming by early April.
We have our new Z. ‘White Giant’ all in pots at the moment, but I plan to plant most of them from their pots into the garden this fall, and expect them to grow a bit better each year..
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Like other Aroids, Zantedeschia is a good plant choice in areas grazed by deer. They have tiny calcium oxalate crystals in their leaves which will irritate the mouth and upset the stomach of any who try to eat its leaves. Zantedeschia belong to the same family and subfamily, Aroideae, as Caladiums, Colocasia, and our beautiful Arum italicum.
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Do you see the family resemblance to this Arum italicum, which is preparing to go dormant for the summer? As the leaves die back, the green berries will grow bright reddish orange, when ripe. Its flower is also the simple spadix and spathe form, in a creamy green.
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Their leaves are large and beautiful. Their flowers are the simple ‘spathe and spadix’ form, which in many genera turn into green, berry covered stalks after fertilization. Other than calla lilies, most of the plants in this family are grown for their leaves or for their edible tubers.
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This Caladium flower isn’t nearly as sturdy or long lasting as a calla flower. Most gardeners cut Caladium flowers away so all the plant’s energy goes into leaf production.
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Natives of southern Africa, these elegant callas enjoy full sun and consistently moist soil. Buy them as dry tubers in the early spring, or as potted plants at many nurseries and grocery stores. Plant tubers near the soil’s surface in good potting mix, and keep just moist until growth begins.
If growing callas in pots, make sure to add fertilizer to the soil to keep them at their best.
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I’m not sure where these peachy orange calla lilies came from…. I was expecting them to be purple when I planted their tubers earlier this spring…. Is this Z. ‘Mango’? At any rate, we will enjoy them and appreciate their generous blooms.
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Zantedeschia are often grown commercially for their flowers, much loved by florists world-wide. Calla stems are long-lasting in a vase, perhaps for several weeks if one changes the water and re-cuts the stem every few days.
If you love their flowers, why not grow them yourself, and enjoy the beauty of the entire plant? This is an easy plant if you give it the sun and moisture it craves. Whether you grow it in a pot or in a bed, it will reward your efforts with many years of gorgeous foliage and elegant blossoms.
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Woodland Gnome 2018
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Forest Garden 