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Fertilizing tomatoes

Fertilizing tomatoes


Question: Fertilization of tomatoes

good morning, having no experience, I would like to know if the earth and fertilizer can be added to the cherry tomatoes in bloom, planted in pots.

I sincerely thank you


Answer: Fertilization of tomatoes

Hello Francesco and thank you for writing to us through the expert column of our website. Our site tries to always be close to readers and to all plants and gardening enthusiasts.

Adding soil and fertilizer to a flowering tomato is not very useful. Usually the fertilizations of the tomato are carried out in two periods, that is, before the transplant and in cover.

Pre-plant fertilization can be done using mature manure or organic products available in any nursery or graden center such as manure, available in both flour and pellets. Floured manure has a cheaper price than pellets as it is simple fractionated dry manure from horses and cattle. Pelleted instead has a slightly lower cost as, thanks to pelleting, it has a more gradual and homogeneous release on the territory and also causes a lower onset of weeds and weeds. In fact, manure, being produced by animals such as cows and horses that notoriously feed on grass, has among the negative effects of its use the onset of weeds on the soils where it is used.

Mature manure must be given in an amount of 3-4 kg / square meter, while if we use mature compost the quantity is slightly less (3 kg). With the fertilizer it is absolutely not necessary to exaggerate as an excess of nitrogen in the soil can cause serious consequences such as an excess of green parts in plants, leaf curling and the presence of small fruits.

Cover fertilization should be done not during flowering but after the early ripening stages of the tomatoes. The quantities of fertilizer must be more limited than with pre-plant fertilization.

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Summer is coming ... and so is the tomato season! The king of vegetables cannot be missing in the vegetable garden home.

In addition to being indispensable for our table, thanks to its numerous types and numerous uses in the kitchen, the tomato plants are those that give the most satisfaction and then you want to put the satisfaction of cultivating it directly and picking it up with your hands?

So here are some tips on how to grow tomatoes in the vegetable garden.

The main types of tomato in Italy

There are so many variety of tomatoes, so the first thing to do is to choose the one you prefer as a flavor or that you know you use most often in the kitchen.

Here is a list of the main varieties of tomatoes that we find in Italy:

• to grow vine tomatoes

It is the most "common" tomato and can be found on the market all year round. This variety is excellent for many uses but gives its best in long cooking.

It can also be used:

  • to make a tasty tomato soup
  • to season the pizza
  • to make excellent preserves
  • raw for bruschetta and capresi

• grow San Marzano tomatoes

The pulp of this tomato remains "firm" and this characteristic makes it especially suitable for use in tomato purée and sauces (it is perfect, for example, for meat sauce).

• grow beefsteak tomatoes

This tomato remains sweet and compact. It has a thin skin, which does not require peeling. Excellent in salads.

• grow salad tomatoes

As you can guess from the name, this variety is so called because it is "salad". It should be harvested when it is half ripe, still green, to capture it at the peak of its flavor which remains a bit more sour than other tomatoes.

• grow cherry tomatoes

Typical of the Sicilian region, these tomatoes are very sweet, have a full taste and a firm and fragrant pulp. They are mainly used raw for cold pasta, bruschetta and as a topping for pizza and focaccia.

• grow cherry tomatoes

This tomato is small, round and very sweet. Perfect for cold appetizers, cheeses, salads and for drying.


The period of sowing tomatoes it varies from mid-February to about mid-March, when temperatures have stabilized.

The operation is very simple: just make a small hole in the ground (deeper than wide), put 2/3 seeds for each hole, cover with earth and fertilizer then moisten everything.

Leave a space of about 50-100 cm between one hole and the next, because this space will then serve you to pass, water, remove the weeds and collect. In very hot areas, the space between one plant and another can also shorten to 25-50 cm so that they shade each other.

Despite the tomato plant it can handle high temperatures very well, this is still a good way to prevent burns.


Sowing tomatoes

The tomato It is an easy-to-grow annual herbaceous plant appreciated for the abundance of its fleshy and pulpy fruits used in fresh cooking and in the form of preserves for winter use.

In this article we describe you how and when to sow and what preliminary operations are necessary such as:

  • choose the seeds of the tomato varieties that you intend to grow, possibly eliminating the sick or moldy ones
  • polystyrene boxes, chests, pots or planters can be used for sowing or sowing bed
  • make sure that the seedbeds are placed in environments where the optimum temperature for the germination of the seeds is constant and not lower than 15 ° C.

Tillage for the cultivation of tomatoes

The tomato is a vegetable plant that develops quite well in any type of well-worked soil, rich in organic substance, well drained and above all exposed in full sun for many hours a day.

The soil destined for the cultivation of tomatoes must in fact be worked thoroughly at a depth of about 30 - 50 centimeters depending on the type of soil and freed from all weeds which in order to develop impoverish the nutritional elements present in it.

If the sowing soil is clayey, too hard and compact, it must be amended to make it soft and rich in organic substance, an operation that must be done in the summer period prior to sowing.

Fertilization of the sowing soil

The soil intended for tomato cultivation must be suitably fertilized at different times to obtain well-developed plants and abundant fruit production.

Generally it must be enriched with essential nutrients such as phosphorus (P), potassium (K) and nitrogen (N).

A first fertilization is carried out with the green manuring of the plants of the previous crops, a second in autumn, burying the mature manure at a depth of 25 centimeters and then before sowing and immediately after transplanting.

Before sowing and immediately after tilling the soil, fertilizer rich in potassium and phosphorus is administered. After sowing and until transplanting the one rich in nitrogen according to the methods and doses indicated on the packages.

Sowing of tomato in seedbeds

Sowing in a protected seedbed is done at the temperature suitable for seed germination. Generally it is carried out by placing only one seed in a container for sowing in the autumn-spring period.

For the cultivation of tomatoes in greenhouses the best period of sowing will be the winter season, for the early crops the summer one for the postponed ones.

Sowing the tomato in the open ground

Sowing in the ground is carried out in spring or by broadcasting or by distributing the seeds directly in already well-worked furrows about one and a half meters away from each other.

The best time for sowing in the open field varies according to climatic zones:

  • the March it is the ideal one for the areas of southern Italy,
  • for the northern ones it will be the April.

After germination, when the seedlings are about 15 centimeters high, thinning will be done by spacing the tomato plants at 40 centimeters from each other. Weaker plants must be eliminated.

Sowing of tomato in pots

There sowing in pots should be done towards the end of March always using a soft and well worked soil. The seeds are placed on the surface and then covered with a thin or layer of earth and protected with a perforated sheet.

The soil must be kept constantly humid and the pot must be placed in a sunny place for many hours a day.

Tomato plant transplant

The transplanting of tomato seedlings is carried out in the month of May, when they have reached a height of about 15 centimeters (about 60 days). The distance between one plant and another must be at least 40 cm.

In case of broadcast sowing, the transplant will be done with bare roots, while in the case of plants coming from protected seedbeds we will proceed by planting them with all the bread of earth that surrounds the roots.

Lunar calendar for sowing tomatoes

When sowing tomatoes it is advisable to take into account the lunar calendar and to respect the phases of the moon.

Sowing done in phase Crescent moon ensures strong and vigorous plants an abundant production of high quality fruit.

If, on the other hand, the sowing of tomatoes is practiced in the phase of falling moon the plants obtained will have a stunted and contained growth and the fruits will be scarce and of inferior quality.

Tomato plant care

If the sowing of the tomato plants was carried out directly in the home, the seedbed must be protected during the night if the weather is still uncertain and the temperature is still too low.

When the tomato plants have reached a height of 30 cm, they must be supported with stakes and fixed to them, supporting their growth with special wire.

If the summer, a period in which the tomatoes swell and ripen, should occur at the height of the heat, it is advisable to protect the younger plants with shading and transpiring sheets, especially in the sunniest hours of the day.

Summer temperatures above 35 ° C often cause leaves to dry out and burn blisters on tomatoes.

Pesticide and pesticide treatments should be applied either early in the morning or after sunset, on unventilated days.


THE tomatoes I am for sure vegetables that we like the most cultivate in the vegetable garden, plants that are easily managed and that offer abundant harvests throughout the summer. From sowing, to fertilization to irrigation, here are the tips that will be useful for you plants healthy and productive.

Growing tomatoes: suitable soil and climate
THE tomatoes (Solanum lycopersicum) love heat and sun, necessary conditions for theirs cultivation be successful. They also adapt to various types of soil, as long as they are well prepared: once the area of ​​thevegetable garden with the best exposure to light, work and ventilate the soil well and enrich it with nutrients, possibly use mature manure (about 2.5 kg per square meter) to be buried as early as autumn for the following year. The plant of tomato it is quite demanding and a good basic fertilization is the first step for one plant healthy and productive.

How tomatoes are sown
THE tomatoes generally they are sown in seedbeds from mid-February to mid-March using cellular containers: make a not too deep hole in the soil of each cell and insert two seeds in each hole. Cover the seed with a light layer of soil then wet carefully.
By placing the honeycomb container in environments with temperatures of at least 15 ° C (preferably around 20 ° C), the plants they will germinate within two weeks. During this time do not forget to water, the soil must always be constantly humid (but not soaked). When the seedlings have reached 5 cm in height, select them by keeping one, the healthiest and most vigorous, per cell. Then repot them in containers of 6 or 8 cm in diameter to favor their development.

How to transplant tomatoes
When the young tomatoes they have developed 4 leaves or reached 15 cm in height, the time has come to transplant them into the vegetable garden. Make sure that outside temperatures always exceed 12 ° C, even at night. If you buy the seedlings in the nursery, plant them from mid-April to the end of May. Remove the seedlings from the container and place them in holes spaced about 50 cm apart on the row and 75 cm between the rows. Enter the plants of tomatoes in the holes, keeping the surface of the earth loaf at ground level, slightly compress the earth and then wet it to encourage rooting.

Growing tomatoes: watering, stakes and pruning
THE tomatoes they need a few but fundamental treatments first of all irrigation, to be carried out regularly and based on the weather, increasing the frequency in the warmer months.
To promote plant productivity of tomato Instead, it is convenient to carry out the "thinning", a sort of easy pruning that involves the manual elimination of the shoots that develop in the axilla of the leaves (ie at the point of intersection between the stem and lateral branches).
And don't forget to hold the tomatoes with stakes: place them on the side of the stem immediately after transplanting and direct the development of the plants by fixing them to the supports with natural raffia as they grow.

How to fertilize tomatoes
Also fertilize with cultivation in place it is very important, especially in the case of poor soils. If, to make your work easier, you want to rely on a single solution for yours vegetable garden, we advise you to use ONE Orto, the fertilizer of natural origin designed to meet the nutritional needs of vegetables. However, there are also specific formulations for i tomatoes, created specifically to meet their needs. This is the case of Maxicrop Natural Tomatoes, an algae-based fertilizer that will take care of the nutrition of your tomatoes.

How to pick tomatoes
The first tomatoes they will ripen about two months after transplanting, you can pick them by hand by grasping and gently rotating the ripe berries, they will come off without difficulty.


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