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PlantFiles: Iron Cross Begonia
Begonia masoniana

Family: Begoniaceae (be-gon-ee-AY-see-ee) (Info)
Genus: Begonia (be-GON-yuh) (Info)
Species: masoniana (mas-oh-nee-AH-uh) (Info)
Additional cultivar information: (aka Iron Cross)

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4 vendors have this plant for sale.

13 members have or want this plant for trade.


6-12 in. (15-30 cm)

12-15 in. (30-38 cm)

USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Sun to Partial Shade
Light Shade


Bloom Color:

Bloom Time:
Blooms all year
Blooms repeatedly

Grown for foliage

Other details:
This plant is suitable for growing indoors
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From leaf cuttings
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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There are a total of 13 photos.
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3 positives
1 neutral
No negatives

Gardeners' Notes:

Positive BayAreaTropics On Apr 27, 2009, BayAreaTropics from Hayward, CA wrote:

Iron Cross was a big surprise success outdoors as a potted porch plant for me. Grew fairly fast. Then I potted it up into a too large pot. A fast decline starting with rotting leaves,mildew showed up. I stopped watering it and put it on a low water diet. This spring it has responded with new large healthy leaves.
So,the warning is never keep the soil too wet or over pot. Without a doubt this Begonia is king of all foliage Begonia's..just dont treat it like a king and it will be happy.

Positive blackbunny On Jun 6, 2006, blackbunny from Provincetown, MA wrote:

I took a trip to Logee's Greenhouse with some friends last fall (Oct. 2005), and tho I was tempted by just about everything there I controlled myself and bought only Iron Cross Begonia because I could enjoy it in my house over the winter. I just love this plant! It has a texture like a sci-fi hybrid reptile; pebbled, a little hairy, bright green with a maroon striping suggesting the cross it's named for. It thrived in my cool, somewhat dry Cape Cod winter indoors and seems to be content with its move to my shady outdoor deck. We'll see what happens out there over the summer, but so far things look good. I think that anyone who admires begonias would enjoy the unique look of this cultivar to add to their collection. Stay tuned...

Positive Pattyperennial On Jan 24, 2004, Pattyperennial from Yakima, WA wrote:

Makes a wonderful unique houseplant. Needs to be grown on a humidity tray.

Neutral smiln32 On Aug 31, 2001, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Beware of snails and slugs if kept outside.
Keep the soil moist. Needs humidity to thrive.


This plant has been said to grow in the following regions:

Fremont, California
Hayward, California
Provincetown, Massachusetts
Norristown, Pennsylvania
San Antonio, Texas

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