If you have already sown and the windowsills are full of plants (which are actually getting too big), then you probably want to throw the whole thing outside... But you really have to hold on a little longer because it can still freeze at night. If you are stubborn and put them in the garden anyway because of lack of space, then by all means protect them with fleece cloth.

If you are going to prune the hedges, check that there are no bird nests in them.

Remove flower stems from the rhubarb. This costs the plant unnecessary energy.

Place straw under the strawberries.

The flower bulbs can be planted in the ground after mid-May. Such as Dahlia, Begonia and Eucomis (can now be grown indoors in a pot). The tomato, zucchini, pepper, cucumber and eggplant plants can be grown outside, in pots or in open ground. 

If you want fruit in the garden but don't have much space, there are small varieties for sale. These can also be grown in pots. The advantage of this is that you can place the pot somewhere with the most favorable conditions. You can adjust the soil type in the pot to the plant. The disadvantage is that you have to water more often.

Also sow nasturtiums, marigolds and other edible flowers. There is a nice app if you want to garden biodynamically that 'Moon & Garden' is called. 

If you now remove the tops of plants such as zinnia, matcha plant, cosmea and ornamental tobacco, you will get stronger, bushy plants with richer flowering. Remove offspring from the pond and ensure that there are sufficient oxygen-rich plants.

Tub plants can go outside again, but let them get used to it carefully.

Keep weeding. Make tea, pesto or use it in a smoothie from nettles, ground elder, dandelion and daisies.

A healthy, good soil is the success for a good yield in the vegetable garden and beautiful healthy plants. You garden on clay or sandy soil and there is a lot in between. But the soil always needs compost. Put as little as possible in the green container and make one compost heap. It is better to only put green waste with annoying seeds or mold in the container. You can put a lot on the compost heap, but not waste from cooked food. That attracts vermin. But coffee grounds, eggshells, and occasionally some unbleached paper work very well. The ideal place for the compost heap is in the shade. Sprinkle some lava flour or bentonite over it every now and then. That speeds up the process.