Frequent questions

Do you have any questions about our products or growing vegetable gardens in general? In this section, we have put together the questions and answers to the issues raised by our users.

If you can’t find your question or feel like something is missing, please send your query to We will get back to you ASAP and will add it to this section. Thanks for helping us grow.

The amount of time the seeds need to germinate varies considerably from one species to another, and it also depends on the environmental conditions. However, as rule of thumb ten days after sowing, the first few sprouts should come out. Lettuces are slightly more impatient, and it can happen after one week. Mint though, for instance, will keep us waiting for three weeks. Be patient!

Germination days 




Salad rocket

Corn salad

Swiss chard



Germination days
Green bean








In the first place, it is convenient to keep temperature and moist constant: in the spring, at least 20ºC, and in the autumn and winter around 10ºC. The optimum germination temperature of most species is usually between 20-25ºC. And above all, keep the substrate always moist.

The best place is somewhere in the middle, which gets both sun and shade.

The best thing for your vegetable garden is direct sunlight. However, you can have the seedbed indoors as long as it’s near a window with sunlight. You can also take it outside during the day and put it under cover at night, to avoid frost.

As an orientation, remember that the substrate should always be moist but not get wet. Plants die both for excess and lack of water. To know if the plant needs water or not, we recommend touching with the finger the surface of the seedbed: if it is dry you will have to water and if it is sufficiently humid, no.

It depends on each variety but, as a general rule, one month after sowing and onwards, or when the crop is about 10 cm high, it will be ready to be transplanted.

If it´s a good quality substrate, it won’t be necessary. But if you are re-using soil you already had, it would be good to enrich it with hummus or another high-quality substrate to avoid a potential loss of nutrients. In your garden centre, you will find products that will fill your seedbed with life.

In general, yes. The only thing you need to do is to make sure that the distance between plants is the right one when they grow. Avoid planting mint or spearmint with other varieties because they like having lots of room to grow, invading all the space. It is also convenient to avoid associating species of the same family. We share the most common examples in the garden:

  • Peas, beans or broad beans belong to the legumes family.
  • Spinach, Swiss chard and beets belong to the goosefoot family.
  • Tomatoes and potatoes belong to the nightshades family.

One of the key aspects of having a successful harvest is a proper orientation of the garden. In general, it is recommended to orient the orchard to the south or southwest and to have 6 hours of direct light in winter and 8 hours in summer.

Uno de los aspectos claves para tener una cosecha exitosa es una buena orientación del huerto. En general, se recomienda orientar el huerto hacia el sur o suroeste y que disponga de 6 horas de luz directo al invierno y 8 horas en verano.

If they are dry, it means they need water. Trim them and water your plants more frequently. If they are yellow they need nutrients: it’s time to add fertiliser to feed the substrate.

In general, the best ally for harvesting is our own eye. Vegetables need to be harvested according to our taste, in the same way, we would buy them at the grocery store. However, we can share some advice:

  • Chards: it is advisable to collect them frequently, cutting the outer leaves first and letting the inner ones grow.
  • Lettuce: it needs to be harvested before it starts running to seed and losing its shape.
  • Zucchini: can grow endlessly; thus it will depend on your taste: some people prefer them small, and some people like them medium.
  • Green beans: will be ready when they are about 20 cm; don’t wait until the seeds show.
  • Corn: should be collected when the grains of the cob are fully developed, yellow, bright and in the milky phase (when we crush the grain between the fingers a white liquid comes out).

They don’t expire, but they lose the capacity to germinate if they are not kept in the right conditions. SEMBRA seeds are packed in pressed aluminium (like a Tetra Brick), which allows the best seed preservation, and they can last up to five years if kept in a dry place indoors.

It is better to use a seedbed to make the most of space and time. Not all seeds or sprouts are the same. When you prepare the seedbed, you will know precisely how many sprouts you get and how much space they take. In this way, it will be a lot easier for you to calculate how much land you will need afterwards.

Yes, it’s not a problem regarding growing. What you need to take into consideration is that these are vegetables and herbs to be consumed raw, so you need to be extra careful and wash them properly before their consumption.

If you have bought our products from our online store, you will receive your order 48-72 hours after the payment. The delivery is done by the courier company SEUR during working days.

Subscribe to our newsletter