--- home for tuberous drosera

Which conditions are suitable for tuberous drosera?

The tuberous drosera are seasonal growers with a rest during a dry period in summer and a growth period during the rainy winter. And most species indeed need such conditions for long term survival. In other words, if you can offer sufficient light levels and preferably cool conditions during the winter months, you can give it a try. The dry summer rest is probably the easiest part of their culture, and I actually tend to like this habit as it makes the summer vacation much easier.

The graphic below shows the average temperature and rainfall for Perth to put some figures on my rough descrption above. All plants growing in that region need to adapt somehow to this conditions and this group of Drosera has done so by growing during the wet (winter) season and by forming dormant tubers for the dry summer. Other typical ways of adaption are seasonal growth - like D. glanduligera - or a dormancy forming a stipule bud - like many pygmy Drosera.

medium temperatures and average precipitation in Perth

Medium temperatures and average precipitation in Perth
The data were extracted from the Australian Bureau of Meteorology website (link)



The species I started with was Drosera auriculata which I bought as a single seedling through an online auction.
That plant found its place in a tank with constant light period throughout the year and temperatures around 20-25 °C - conditions far from being ideal for the general culture of tuberous drosera. Nevertheless, the plant developed well although it did not follow its normal growth cycle. A tuber never was produced - a new plant appeared instead once the previous died back. Seeds were never set either, most likely due to the high humidity in the tank. After 2 years I stopped that experiment and finally gave that plant conditions which were better reflecting the conditions it is exposed to in nature. Since then it regularly goes dormant in spring as one would expect. However, please note that there may be more one way to grow a plant successfully. Having stated that, I would also like to point out that D. auriculata is among those few very forgiving species and many other species listed may not survive such conditions.

Apparently, at least this Drosera auriculata (which I still grow) can survive without the dry resting period under certain conditions and the same is true for Drosera peltata and Drosera hookeri. There may be other species behaving similarly, but at least those are the ones I grew successfully using a short, constant light and cool conditions throughout the year on some shelf in my basement.

Which would be good beginner species?

Besides Drosera auriculata and its close relatives Drosera peltata and Drosera hookeri there are some other easy* to grow species one can start with to gain some experience. * Please note that the question regarding "easy" species will quite likely lead to different answers as it often is a combination of "easy to grow" and "easy to obtain".

Examples for such other species which are both easy to obtain and easy to grow are Drosera menziesii (an erect growing species), Drosera macrantha, especially the Rock Outcrop Form (a climbing species) and Drosera aberrans or some Drosera erythrorhiza subspecies (rosetted species).
There may be more suitable species, but as so far the plant/tuber availability was the major limitation, there also is equally limited experience about the difficulty of many other species. For this reason I limited the list to the species often recommended.

Please respect that all texts and photos were created by me and may not be used without my permission.