The 10 Facebook questions of the week

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Every week our social media team reaches a few hundred questions about our favorite hobby: the garden. Most of them are quite easy to answer for the editorial team of MEIN, but some also require some research effort to be able to provide the right answer. At the beginning of each new week we put together for you our ten Facebook questions of the past week. The themes are mixed - and this time ranging from edible rose petals on fighting Thripsen to transplanting blackcurrants.

Facebook: The top questions of the calendar week 24

1. Can you grow cucumbers and tomatoes in a greenhouse?

Cucumbers and tomatoes can be cultivated together in a greenhouse, but the space requirement should be considered. For cucumbers and tomatoes to deliver maximum yields, they need regular care. The optimal greenhouse temperature is 25 degrees during the day and 20 degrees at night. Be sure to ventilate at over 30 degrees Celsius! Since cucumbers and tomatoes need a lot of light, shading is usually superfluous. On sunny, warm days, you should water the plants two to three times a day.

Pour tomatoes

For fruit vegetables such as cucumbers and tomatoes, you should use stale, slightly warmed-up water for pouring

2. I have two cucumbers and four tomato plants in the greenhouse. Every two days, I pour two 10-liter pitchers. Is that enough?

The need for water depends heavily on the weather, so it is difficult to estimate the amount of water needed. But especially cucumbers have a high water requirement. At higher temperatures, the surface of the earth dries up quickly, although there is still enough moisture in the root area. If the plants grow well and thrive, the amount is okay. If the soil in the root area is not sufficiently wet (finger test!), Then the casting amount should be increased. Basically, it is better to water extensively once a week (at least 20 liters per square meter) than to administer only a small amount of water daily.

3. How do I recognize and treat thrips in greenhouse cucumbers?

Thrips are only one millimeter in size and therefore hardly visible to the naked eye. A closer look at the insects reveals a slender body with two pairs of distinctly fringed wings ("fringed wings") lying flat over the body. The animals suck mainly on leaves, which then get a silvery, spotty shine - it can be quickly recognized an infestation. Thrips can be easily dealt with blue boards.

Leaf damage due to thrips on a cucumber leaf

Leaf damage and black stains due to thrips on a cucumber leaf

4. My hydrangeas are not yet blooming and the leaves are becoming reddish - what does that mean?

There are different reasons why leaves, including those of hydrangea shrubs, turn reddish in summer. In addition to a lack of phosphorus, a main nutrient of the plants, also fungal pathogens such as powdery mildew can lead to reddish spots. However, the most common cause is a stressful situation due to heat or dryness, in which the plant in response to an increased concentration of anthocyanin, a reddish plant dye, built into the leaves.

5. Are all types of roses edible or only certain varieties? I love rose jam and would like to make it myself, but I am always irritated when the labels of the roses is that they are not intended for consumption.

The companies have to protect themselves legally, so many non-toxic plants adorn the label that they are not suitable for consumption. The main reason is that ornamental plants are allowed to use far more toxic pesticides than crops - so if you buy newly purchased roses for at least a year, you should stop harvesting the flowers. The flowers are basically edible on all roses.

Rose blossom Rosella

In general, all unsprayed scented roses are suitable for consumption. Particularly popular, however, are the edible flowers of peasant and dog roses and the potato roses. Especially for the kitchen you will find even gourmet roses in the trade such as the variety 'Rosella'

6. I was told that there are also evergreen clematis, is that true?

Among the countless species and varieties of Clematis, there are also some evergreen specimens. The varieties of Clematis armandii retain their rhododendron-reminiscent, elongated, thick-fleshed leaves throughout the winter and decorate fences and facades from March with their fragrant white flower.

7. I love my blackcurrant! We're moving soon and she's supposed to be with us, of course. Whats the best way to do this?

The best period for transplanting black currants are actually the months of October to March. Generously lift the root ball with the spade and wrap it with a biodegradable ball-cloth. At the new location dig out a correspondingly large planting hole, loosely loosen the ground with the grave fork. Tip: Mix compost on mature soils. Then you put the shrub with the ball cloth again, fill in all around earth and open the ball cloth. After casting, you should fertilize the root area with horn shavings and cover with bark mulch.

Harvest blackcurrants

In view of the high vitamin C content and other plant substances blackcurrants are the most valuable berry fruit

8. My lilac has not flowered this year. What can this be?

An unfavorable location and the wrong care are the most important causes, if the lilac does not bloom. Similarly, too much pruning, too much fertilizer or gardening is one of the reasons why a lilac does not bloom. The late frost, too hot days, too little water or a beetle attack of the buds are also conceivable. Even in the case of very old plants, the flowering can sometimes be a bit meager - in this case, a rejuvenation cut helps.

9. I got raspberry offshoots. How do I know if it's summer or autumn raspberries?

Summer and autumn raspberries bloom and fruit on the biennial rods. The harvest season is from mid-June to the end of July. Autumn raspberries such as 'Autumn Bliss' or 'Aroma Queen' form flowers and fruits in addition to the rods, which developed from the rhizome in the spring of the same year. The first berries will be available from mid-August, the harvest is late autumn. If your raspberry continues to bear fruit in August, it's an autumn raspberry. These varieties are usually omitted on the summer harvest to promote the fruit set in late summer and autumn. Simply cut off all shoots after the last harvest in autumn at ground level.

Autumn raspberries fruit

Although autumn raspberries are not as full-bodied and aromatic as summer varieties, they are much easier to care for. In addition, the dreaded rod dying does not occur in them and one can harvest longer

10. Is it true that the hydrangea 'Annabelle' tolerates a lot of heat?

The snowball hydrangea 'Annabelle' tolerates most of the hydrangeas sun, but needs like all species a good water supply. That many plants limp in high heat and let the leaves hang, can not be avoided even with the 'Annabelle' - this is quite normal and a protective reaction of the plant.

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