The activity of the organic garden in March

March brings us spring and with it longer days with more light and more moderate temperatures (sometimes…). During this month we can enjoy the garden by sowing new plants and transplanting others.

The spring is coming, milder temperatures arrive and we begin to fill our vegetable garden. In indoor areas we must be careful with late frosts that can damage plantings and transplants. It is possible that there are quite mild temperatures for a few weeks and that we have to take care of the irrigation of the garden.

We must bear in mind that March is an unstable month of contrasts. One way to avoid damage is the use of greenhouses in which we can keep the seedbeds and crops away from the last frosts. It is important to remember that on days with a lot of sun we must aerate them so that the temperatures do not rise too high and damage the plants.

For temperate climates, close to the sea , we can start with plants of summer species: tomato, eggplant, cucumber, zucchini and pepper. On the contrary, if we are in a better inland region , it is advisable to wait until the second half of March or even April, to avoid damage due to low temperatures that may bring the last frosts.

  1. Sow in protected seedbeds: aubergines , squash , melons , cucumbers , peppers and tomatoes .
  2. Sowing  in open seedbed: chard , celeriac, onions , sweet potatoes, cabbages , endives and lettuce .
  3. Sow directly in the garden or in a definitive pot or container :  beans , spinach , parsnips , potatoes , radishes , carrots .

It is also very interesting, as natural repellants and to attract pollinators , take advantage of and plant aromatic plants   that are very useful for the garden and to take advantage of its medicinal and culinary uses.

For the seedlings that we have prepared in winter, we can transplant them to their final site. Important to take into account the development of the plant. Normally the best time to transplant is when the height of the plant is greater than the container depth in which it has been planted. For leafy plants, we will wait until the seedling has more than 4 true leaves.

When it comes to transplants, it is preferable to do it in the late afternoon, so we will avoid the plants suffering from dehydration and heat.

It is necessary to emphasize that the vegetables that will be transplanted outside when the good weather arrives (tomatoes, peppers, etc.) and that we have in seedlings, must be protected from low temperatures indoors or in greenhouses. We must not forget to keep them aerated on hot days, to prevent the plants from suffering from high temperatures.

And already in the second half of March we will be able to transplant the varieties with more resistance (endives, lettuce, onions, leeks , chard, etc.)



Before transplanting the vegetables we must provide organic fertilizers so that the earth has nutrients for the plants. In addition, we will cover them with plastic while we wait for planting or transplanting.

We can also use it to mulch or mulch



If we have chosen a drip irrigation system, we will place it before sowing or transplanting and mulching. In the hottest weeks we could increase its frequency. I leave you a formula to make at home an irrigation water that stimulates the growth of plants .

It is important not to flood the ground when watering, as it would contribute to the rotting of the roots. It is necessary to observe how the plant and the soil react to adapt the irrigation to your needs. More information on irrigation


Precisely something that affects the health of the plant is the instability of the temperatures. This will make you more prone to diseases and pests. So by way of prevention we can make enriched irrigation water at home to strengthen the plant and help it during growth.

When we see that the buds begin to grow, we can apply a fungicide. 

Another application of white oil can be done when the flower begins to form, and thus we fight aphids, mites, mealybugs, miner, etc.

To make the white oil you will need:

– 2 cups vegetable oil

– 1/2 cup plain liquid soap

– Empty jar or wide-mouth

bottle – Spray bottle

Pour the vegetable oil and liquid soap into a bottle or jar and shake until the mixture turns white. This is the white and concentrated oil to use it, which needs to be diluted with water.

To use it, add 10 ml per liter of water (two tablespoons per liter of water), put in a spray bottle, shake well. Now you can spray your plants or trees. Spray in the late afternoon. Store in a cool and dry place, the shelf life is approximately three months from the day it is made.











Remember that you can check the Sowing and Harvest Calendar


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