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Products > Kalanchoe 'John Bleck'
 
Kalanchoe 'John Bleck'

Note: This plant is no longer in stock. This is an archive page preserved for informational use.  
Image of Kalanchoe 'John Bleck'
[2nd Image]
Habit and Cultural Information
Category: Succulent
Family: Crassulaceae (Stonecrops)
Origin: Madagascar
Evergreen: Yes
Flower Color: Orange Red
Bloomtime: Winter/Spring
Synonyms: [K. 'Arrowhead'']
Parentage: (Kalanchoe rosei?)
Height: 1-3 feet
Width: 1-2 feet
Exposure: Full Sun
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 25-30° F
Kalanchoe 'John Bleck' - An upright growing succulent with a central stem to 2 feet tall with succulent green leaves that have red serrated margins and interesting triangular auriculate basal lobes that rise perpendicular to the leaf surface. From the top of the stem arises a 12 to 18 inch tall branching inflorescence holding clusters of pendulous flowers with light purple calyces and orange petals. Plant in full to part sun and irrigate occasionally to very little. Hardiness is not well known but has withstood light frosts and should be hardy to between 25-30° F. Will produce plantlets at the bottom of the hastate leaf bases. We received this plant from noted aloe breeder John Bleck, who received it from Ed Mercurio labeled Kalanchoe peteri. As it didn't match the description of this species Bleck speculated that it was actually Kalanchoe rosei or a hybrid involving this species and possibly K. daigremontianum or K. tubiflorum. All of these species are ones that were once placed in the Bryophyllum genus and produce plantlets on the leaf tips as this one does - this plant has the foliage more like Kalanchoe daigremontianum but with flowers more similar to K. tubiflorum. We were certain that this plant had a valid cultivar name could only call it by the name of the person we first received it from. We have since been filled in more on its origin by Ed Mercurio, who noted that he originally purchased the plant in the 1970s from Kelch Cactus nursery in Prunedale and thought it might also go by the name 'Arrowhead' in reference to the leaf shape. 

The information displayed on this page about Kalanchoe 'John Bleck' is based on the research we have conducted about it in our nursery library as well as from information provided by reliable online resources. We also include our own observations made about this plant as it grows in the nursery gardens and other gardens visited, as well how the crops of this plant have performed in the containers in our nursery field. We will also incorporate comments that we have received from others and welcome hearing from anyone with information about this plant, particularly if it includes cultural information that will aid others to better grow it.

 
San Marcos Growers, established in 1979, closed for regular business on December 23rd 2025 as the property will be developed for affordable housing.
The gates are closed but we will be open by appointment only as we liquidate remaining plants, supplies and equipment. Our remaining plants are listed on our Live Inventory Page.
 
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