The name ‘Kaiserkrone’, which is also used, does ‘Boscs bottle pear’ credit and is a very valuable, old variety in the home garden. We'll tell you why.
‘Boscs bottle pear’ is also known under the names ‘Kaiser Alexander’, ‘Alexander pear,‘ Beurré d‘Apremont ’or‘ Imperial crown ’. The pear variety bears a lot of fruit even in old age and is best suited for direct consumption due to the sweet, tenderly melting flesh and the limited shelf life.
contents
- Bosc's bottle pear: profile
- Origin and history
- Properties and taste of the pear ‘Kaiser Alexander’
- Growing and caring for the pear tree: this is important to note
- Harvest and use Bosc's bottle pear
Bosc's bottle pear: profile
| Synonyms | 'Kaiser Alexander', 'Alexander Pear', 'Beurré d'Apremont', 'Imperial Crown' |
| fruit | Medium to large, green-yellow skin with strong, yellow-brown russeting |
| taste | Sweetish, very juicy |
| Yield | Regular, medium to high |
| Harvest time | From mid-September |
| Ripe for enjoyment | From October on |
| Shelf life | Can be stored in a cool place until December / beginning of January |
| growth | Medium strong, pyramidal crown |
| climate | Can be cultivated widely, also suitable for medium altitudes |
| Diseases and pests | Locally susceptible to scab, moderately susceptible to viral stone fruitiness |
Origin and history
Where ‘Boscs bottle pear’ (Pyrus communis ‘Boscs bottle pear’) has its origin is not exactly clarified. It is believed, however, that they were born at the beginning of the 19th Century in Belgium or France emerged as a chance seedling. Its name goes back to the director of the botanical garden in Paris Bosc. It is said to have found its way to Germany under the name ‘Kaiser Alexander’ pear by the pomologist Van Diel in 1810.
Tip: The name ‘Kaiserkrone’, used synonymously, is also used for the pear variety ‘Princess Marianne’ used, which is ripe earlier and has a significantly different taste. Despite the similar appearance, however, these are not the same variety of pear.
Properties and taste of the pear ‘Kaiser Alexander’
The shape of the medium-sized to large fruits is best described as bell-bellied or bottle-shaped. They tend to be slimmer towards the stem. This is seated, sometimes with a small bulge of meat. The basic color of the ‘Bosc bottle pear’ is actually green-yellow - but this is usually not recognizable at first glance, as the yellow-brown russeting of the peel is very dominant. This is typically washed out and web-like. The peel is rather rough and dry, but that doesn't bother eating it. In contrast, the whitish-yellowish pulp is not dry at all, but very juicy, sweet and very tasty.
Growing and caring for the pear tree: this is important to note
The pear variety ‘Kaiserkrone’ can cope with many different growing conditions, so it can be cultivated widely and can even be grown at medium altitudes. It prefers warm and nutrient-rich soils that should not be too moist or rich in clay. Sandy, loamy or humus substrates are ideal. If there is too much copper or sulfur in the soil, the tree can be a bit sensitive.
The tree of the pear variety Kaiserkrone ’grows to medium strength with a pyramidal crown. He needs maintenance cuts every year, in which one should remove old branches and divert overhanging fruit branches to more upright side shoots. ‘Bosc bottle pear’ forms long fruit shoots and does not branch well. For this reason, the tree should be pruned several times during the upbringing in the first few years so that sufficient scaffolding branches form. Old, rarely cut trees of the ‘Boscs bottle pear’ variety often consist only of inferior, hanging fruit wood and then have to be rejuvenated more radically. General tips on how to use your Pruning fruit trees properly, you get in our special article.
The pear is offered as a high stem, half stem or bush tree. ‘Boscs bottle pear’ is also very popular in the trellis, although its growth behavior is not ideal for this. Quinces are unsuitable as a base for this pear. The quince A underlay can be used with intermediate finishing. For taller tree shapes, ‘Gellert's Butterbirne’ is recommended as a master builder. The slow-growing base ‘Pyrodwarf’ can be used for half-trunks or bush trees.
The ‘Kaiserkrone’ pear is only locally susceptible to scab and is only moderately susceptible to viral stone fruitiness, which has an advantage over varieties such as‘ Gellert's butter pear ’. The wood of the tree is sensitive to frost, but the flowers are usually sufficiently resistant to late frosts. Even when using pesticides, no agents with a lot of copper or sulfur should be used, as the ‘Imperial Crown’ is sensitive to this.
The flowering time of ‘Boscs bottle pear’ is between April and May. As a pollinator of ‘Boscs bottle pear’, for example, the variety ‘Conference‘, The‘ Williams Christmas pear ’or‘ Clapp's darling ’in question. If you combine these in your garden, the varieties can pollinate each other, since the ‘Alexander pear’ is a good pollen donor.
You can also expect a good medium to high yield from this strain, which is always very regular and usually of good quality.
Tip: With a mainly organic complete fertilizer like ours Plantura organic universal fertilizer the low sulfur content of only 2% is ideal for this sensitive variety. At the same time, with its long-term effect, the organic fertilizer has the advantage that you do not have to constantly re-fertilize your pear tree even when cultivating in pots.
Harvest and use Bosc's bottle pear
The Kaiserkrone ’pear can be picked as early as mid-September, although it will be ready for consumption from October. It is advisable to pick them when they are hard, as the fruits can easily fall off when they are really ripe. If the pears are stored in a cool place, you will still have some of your pears until December or early January, as they can be stored at 0 ° C for two to four months. The large fruits are best for direct consumption or processed as compote or for drying. They are less suitable for pickling, as the pear turns brown in the glass.
Like your boy Plant a pear tree, we explain in more detail in our special article.