7/30/2010

Bowiea volubilis


It is called Climbing Onion. Volubilis means: whirling, changing, rolling, flowing. The Bowiea name of the genus maybe comes from the name of somebody. I know of a James Bowie in Texas in the 19th century but I don't know if he has something common with the name of this plant.

It is a bulbous perennial (in fact it is not a real bulb, I think). It is native to South-Africa, Zimbabwe, Malawi, Zambia, Tanzania. Therefore it is not hardy here in Hungary, it must be wintered at about 10°C. It belongs to the family Hyacinthaceae – well, I could never guess this.

The flowers are very little and green, maybe it could be nice with plenty of them. Our plant has not too much flowers yet. I've read that after seed ripening the greenery (not quite foliage) will die. The lady I bought it from told me that it begins to grow again in Spring. On the net I've read that this happens in the Autumn. OK, Autumn in South-Africa is Spring in Hungary... It likes much water in Summer but the bulb is also prone to wet rot so it should be buried only 2/3 in the compost. The bulb hates hot and sun, but the plant itself likes it. So I covered the upper 1/3 part of the bulb with grit. During the resting period the compost has to be left dry.
It can grow very large, the bulb can reach 25 cm diameter, the plant 2,5 m height. As seen above it has no real leaves, is assimilating with the green stems and fringes and climbs vigorously on what it finds.
Not that it is a beauty, just interesting maybe. I bought it in fact because I wanted to let something to climb on the trunk of a dead Fuchsia.

7/28/2010

Seeds and Seed Pods-4

This time no seed pods, only withered flowers, but it was so interesting I thought I should post it here.

I've already wrote about this nice bluebell in a post in June.

Campanula raddeana 

It is characteristic to bluebells (Campanula) that the pollen is ripe already when the flower is not yet open. This partly prevents self pollination because the stigma becomes receptive only after the opening of the flower. As the sticky style is elongating and pushing itself through the other parts of the flower, it collects pollen grains:



In case of Campanula raddeana the stamens interestingly curl back after the anthers had released the pollen.
Later the stigma splits to three parts and from now on it is ready to welcome the pollen. If there is still some fertile pollen grain around.
On the following picture you can se  the split stigma, but don't be deceived! It splits when the flower is still fresh, this picture was taken a little too late.


Self pollination in general is not common to bluebells, but sometimes happens. I don't know what about this species but I think it is not self fertile. There were many flowers in June but no seeds at all. According to botanists there are many insects visiting bluebells but their pollination capacity is not the same.

Now it is flowering again, though not so abundantly as in June.

Here you can se better the curled stamens and the stigma and style with pollen. To show this, I had to pull off the wilted, papery petals – it was not easy.


It would be nice to collect some seeds from this pretty Campanula, but I don't think I will have the opportunity...

Source – except of my observations confirmed on my pictures –: Graham Nicholls Dwarf Campanulas (Timber Press, 2006), and some abstracts of scientific papers found on the net.


7/26/2010

Cyclamen purpurascens Encore

I showed it in an earlier post, but I must show it again because it is simply beautiful. And one can not see on the picture that there are countless buds below the leaves.



The End of the Dog Days

And as usual in Hungary, the temperature has made a power dive from 36 until 16°C.

7/23/2010

Habranthus robustus


It is a bulbous plant of Amaryllidaceae family, native to Argentina and Brazil, not hardy at our climate. I keep it in pots and take it to the cellar before the first frosts. There it waits for spring, in the compost, normally without water, but sometimes our overzealous neighbour waters it. Due to this superfluous watering it has green shots all winter and I have to repot it already in January. I think it also affects the flowering which is not so good as I would expect. The repotting was shown in an earlier post.


It usually begins to flower in June and continues until August. But the peak of blooming is at the beginning, when we usually are somewhere in the Alps on holiday, so I can see only the remnants of late beauty.
Well, there are still some flowers...


It has long, ribbon-like leaves and 7 cm flowers which have a vivid magenta color after opening, but this dims a little on next days. One bulb produces many flowers one after the other. The flower stem is rather long (too long for me). I always remove the dead flowers, so I don't know if it could set seeds.

I mix a ready made compost with 1/3 part perlite for planting. During summer I give it a fertilizer used for flowering pot plants. It produces many bulbils every year, these can reach flowering size in two years. In summer I don't let the compost to dry out but certainly take care to avoid stagnant water.
I have seen window box planted with it. I usually put many bulbs together to have many flowers, but this means I have to give more fertilizer.





7/22/2010

Citrus Flatid Planthopper (Metcalfa pruinosa)

I see (and hear) that it is a quite consistent guest in gardens these days. I found its larvae on a Ranunculus alpestris in one of our miniature rock gardens. Later on we realized that all the house's garden was full of jumping larvae, flying parents and disgusting wad-like larvae skins. They have made no damages on our plants as yet, but are rather obnoxious.

You can see here the pictures and description of our friend about this pest, coming from another part of the world.

7/19/2010

Seeds and Seed Pods-3

Cyclamen persicum

Cyclamen persicum cultivars can be bought en masse in flower shops and nurseries.
These species' seed pod carrying stems are not curving, like others, only just bending a little. The seeds can be put even this way on the ground, to the delight of the ants.
Here the seeds are not yet ripen, but the stem is already bending:



Cyclamen purpurascens


 It is native also to Hungary, but I've never seen it in the wild as yet. I have seen it in Croatia near the Plitvice Lakes in the woods, where there were beautiful clumps with rich flower buckets in early September.

I swapped the tubers with a gardener from Linz, Austria. He has many in his garden, and sent me 8 large tubers and 6 seedlings  by mail, packed carefully in moss and a perforated plastic bag. All are alive and feeling well. I gave some to my friends, these are also thriving.
Two weeks ago I told it did not flower too well this year. Now I see that this was wrong, it was just a little later compared to last year's flowering. Now there are many flowers and their colors are much better than a year ago. And also the seedlings are flowering already! At nights their scent fulfill the balcony.


I cultivate the large tubers in a 20 cm crock pot. I made a humous-gritty-sandy compost for them and this is covered with a 2 cm layer of dolomite grit. I water it only once a week in summer, but I give then a copious amount of water. They are very hardy also in pot, but I have to be careful the compost not to be too wet then. I used to pack the pot in paper or plunge it in pine needle or dry peat to the rim. Sometimes the leaves were frozen, but they recovered and flowered well every summer. The seedlings spent the winters in the frost free staircase until now.
They are put in shade during hot summer days, but this spring I thought I would let them to get sunshine until the trees leaf. They live in deciduous woods where they are shined below the bare trees in early spring.

I have many seeds every year, but I give it to seed exchanges, until now I've never tried to sow them.


The Grasshopper and the Bucket with Rainwater

Poor thing... Dropped in and stuck on.

7/12/2010

Primula sp. (sieboldii?)

I've got this plant with the name "maybe Primula sieboldii". I also think that "maybe".
It is rather different than the far east originated species, but I know that in Western-Europe there are about 25 P. sieboldii cultivars. It has come to us a few years ago in April, just in bloom, but it never flowered after that. And now, in middle July...





Here is the whole plant in one of my troughs: