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Content

This page is dedicated to the plants of the cactus family, Cactaceae.
With lots of pictures, locale information, authors, synonyms, and generic care tips. My goal is to build a unsable online cactus encyclopedia. Please apologize that this cactus encyclopedia cannot be complete because of the huge number of genera. I use the taxonomy of Curt Backeberg based on the book "Kakteen von A bis Z" by Walther Haage (1981).


Thanks to

My thanks goes to the famous cactus nursery Kakteen-Haage in Erfurt, which allowed me to use plant descriptions from the book "Kakteen von A bis Z" by Walther Haage and images from their plants inventory on this homepage. Furthermore, I would like to thank the Botanical Garden of the University of Heidelberg, which that allowed the use of pictures from the collection of cacti by Werner Rauh. Thanks to all the cactus friends who helped me with their words and pictures. My special thanks to Immanuel Voigt and Edward Bartlett for correcting the English translation.


Current

The translation of the English version is not finished yet. Some parts are available in English. The translation goes on.
The work on the Encyclopedia is initially completed but will be continally corrected and updated.
I wish all visitors an informative and pleasant stay and enjoy your visit!

 

 

Worth seeing

Images from private / public collections, botanical gardens and cactus nurseries.
Clickable picture links, can be found here.

 

Viewed

Have a look at the highly respected Tucson Cactus and Succulent Society and their monthly Newsletter.
Very interesting is the Cactus Rescue Crew. They harvest cacti and other native plants that otherwise would be destroyed during the development of the Arizona real estate. The saved plants are offered at Cactus Rescue Sale, where everybody is welcome!

 

 

Care in March

General

Do additional repair works in the
greenhouse, in glass boxes or
in the cold frames.
In the middle of the month remove the rain protection over the winter-hardy cacti.

Light/Ventilation

Offer the plants a light spot and maximum amount of light BUT avoid full sun (shade!).
Schlumbergera, Epiphyllum and Rhipsalis need shade or a place which is slightly off-sun.
Give newly transplanted or not growing cacti
only in warm weather fresh air, otherwise ventilate as much as possible.
Give additional light to plants which still stand in the basement.

Temperature

Do not underestimate the heat of the March sun! Prevent the risk of burnings with shading, above all for cacti from a dark winter site.
Some cacti prefer some slightly lower winter temperatures e.g.: Echinocereus, Chamaecereus, Tephrocactus, Lobivia and bring Echinopsis species. You can already bring them in favorable weather in a protected summer quarter.

Water/Nutrients

Start with a little watering, a little mist on hot days. Cacti with buds, e.g. Rebutia, Neoporteria and Parodia species, water more abundant.
Continue transplanting, repot spring flowering bulbs after blooming and keep transplanted cacti at high humidity.

Reproduction

Sowings continue to hire, with additional light and under-heat.

Pest control

When repot pay particular attention to pest infestations, such as root lice, spider mites and nematodes.

© Copyright 2004 - 2010 Ralf Holzheu
www.Kakteensammlung-Holzheu.de
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