Before answering the question of when to plant tomato seedlings in open ground, we will try to figure out how to do this correctly.
Seedlings
The seedlings grown in cups do not require special preparation before planting it in the ground. Is it necessary to water the plant abundantly so that the lump of earth does not crumble when it is taken out of the glass. The task is complicated if seedlings are grown in a common container. But in this case, you should well water the young tomatoes and dig them up with a lump of earth. Then carefully transfer to a suitable container. It is recommended to treat the root system with a stimulant that promotes growth. But in any case, dug seedlings should be transplanted into the ground as soon as possible.
If you decide when to plant tomato seedlings in open ground, try to choose evening time for this. Of course, it is possible in the afternoon, but always in cloudy weather. It will be difficult for plants to immediately acclimatize, to get used to the bright rays of the sun, because they are used to shortened daylight hours.
When tomatoes are planted in open ground, they try to prepare the soil for planting and water it abundantly. Plants are planted at regular intervals from each other in straight rows. The seedlings grown in cups take root very quickly. But in any case, digging and replanting seedlings should be along with the ground. But peat pots can be buried in the ground along with the plant.
After planting, the tomatoes are watered, and the soil around the plant is sprinkled with peat or dry soil. Thus, the soil will remain wet longer, and plants will restore the root system faster. Early spring planting of seedlings does not require watering, at this time there is plenty of moisture in the soil.
By the time it will be possible to plant tomato seedlings in open ground, the plants should already be prepared. To do this, conduct "rehearsals". In sunny and warm weather, seedlings can be put on the balcony or taken out onto the street. The residence time of plants in direct sunlight should be gradually increased. This will become a kind of hardening for young tomatoes and prevent the appearance of burns after they land in the ground. A week before planting, plants can be left in the open for a whole day.
If seedlings were grown in a greenhouse, then hardening is carried out by opening the film or window leaves. I must say that the seedlings grown under the film, has a darker color of leaves and is considered more hardened than homemade.
Favorite Tomatoes. Outdoor cultivation
In the Moscow region, seedlings of celery, various types of cabbage, rhubarb, lettuce and black onion should be planted in late April or in the first days of May. But tomatoes, cucumbers, peppers, zucchini and pumpkin are planted in the ground in early June.
If the seedlings are planted in a greenhouse or under a temporary film, then this can be done a couple of weeks earlier, and if the greenhouses are heated, then 3-4 weeks earlier.
However, the climate in our time has become quite unpredictable, therefore, to answer the question of when to plant tomato seedlings in open ground, you can do this: when the real spring comes. Some gardeners argue that the most acceptable time for planting is the time until mid-May, but it is better to do this at the beginning of the month. In any case, the earth should have time to warm up well. Heat-loving crops in cool soil may not take root or for a long time not bear fruit. If there is enough heat, then after a week the plants blooming on the windowsill will tie fruit in the open ground.
Good luck in the beds and a good harvest!