Planting and growing peanuts (peanut) is a fascinating experience for those with a large plot of land or just a small balcony or corner of their home. Although we usually associate peanuts with commercial plantations in tropical climates, learning how to grow this plant is completely viable in many places if you know its characteristics and needs. Below, you'll discover a comprehensive and detailed guide so you can successfully complete the entire process, whether in a garden, bed, pot, or seedbed, integrating all the key details to consider throughout its development.
Where can peanuts be grown?
El peanut cultivation It's feasible anywhere plants can grow in a warm environment for several months, especially in areas with long, sunny summers. In the Iberian Peninsula, the southern and eastern regions are particularly popular, but don't limit yourself: cultivation is also possible in other regions if you take advantage of well-conditioned indoor spaces or use large pots on a balcony or terrace.
- Minimum conditions: Stable temperatures between 20°C and 30°C.
- Sun light: At least 6-8 hours of direct sunlight daily, which can be achieved indoors near large windows or with LED grow lights.
- AdaptabilityThanks to its annual growing cycle, you can grow it from seedbed to pot, from indoors to outdoors, or dedicate a plot of land to it in your garden.
What is a peanut? Basic characteristics
The peanut (Arachis hypogaea), also known as peanut, is an annual legume native to South America. It is related to beans and broad beans, but its main peculiarity lies in the fact that its fruits are formed underground after the fertilization of the flowers.
- Family: Fabaceae.
- Plant type: Annual, with stems that can be erect or creeping, with compound leaves and yellow or white flowers.
- Flowering and fruiting: After pollination, the flower stems point downwards (gynophore) and introduce the fertilized flower beneath the soil surface, where the peanut pod will grow.
- Nitrogen self-fixation: As a good legume, it develops nodules in the roots that allow it to fix atmospheric nitrogen and use it as a nutrient.
Types of peanut cultivation
- Spanish peanuts: Vertical growth plants, pods with two seeds and early cycle.
- Valencia Peanuts: Darker seeds, 3 to 5 per pod. They are fast-growing and vertical, ideal for early harvesting.
- Virginia peanuts: Creeping, late-harvesting varieties with large seed pods. They are the most widely grown commercially due to their size and yield.
Select the variety according to your climate and needs: for pots, upright plants take up less space; for gardens, trailing plants thrive in ample, loose soil.
Preparation of the soil or substrate
The success of the crop lies in the substrate or soil conditions. Peanuts require soils loose, light and well-drained, since the fruits must develop underground without impediments.
- Texture and composition: Prefers sandy or sandy loam soils, but also thrives in clay loam soils as long as compaction is avoided.
- pH: Optimal between 5.5 and 7.0.
- AmendmentsAdd well-rotted compost or manure before planting; it improves structure and provides stable organic matter.
- DrainageEssential in pots, use a layer of gravel or perlite at the base.
For areas with heavy soil, supplement with coconut fiber or washed sand. Turn the soil well, remove plant debris, and aerate thoroughly. If planting in pots, choose containers at least 25 cm deep.
How to Plant Peanuts: Step by Step
- Seed choice: Buy raw, unroasted and unsalted seeds, preferably in the shell. Roasting peanuts prevents them from germinating.
- Sowing time: When the soil temperature remains above 18°C. This generally coincides with spring and the onset of warm temperatures.
- Pre-soak: Since the seeds are relatively large, you can speed up their germination by soaking them for 8-12 hours before sowing, although this is optional.
- Sowing depthPlant peanuts about 5 cm deep; in rows, leave 30-40 cm between plants, and about 60 cm between rows in wide-open plantings. In pots, one seed per container is sufficient.
- First watering: Water gently after covering to settle the soil and prevent waterlogging.
How to grow peanuts at home and in a pot
Growing in containers is an excellent alternative for those without a garden and a great opportunity to enjoy growing plants up close. Here's the step-by-step method:
- Choose generous containers that allow the development of roots and fruits underground: minimum 25 cm deep.
- Loose substrateA mix of potting soil with perlite or sand and compost will be ideal.
- LocationPlace the pot where it receives at least 6-8 hours of direct light. Indoors, supplement with artificial light if necessary.
- Moisture and irrigationMaintain constant humidity, but do not overwhelm the soil. Ideally, water whenever the substrate dries out at the top layer.
- Beware of temperature variations: Protect the plant from cold drafts and ensure that the environment is within the optimal range of 20-30°C.
- Hammered: When the plant reaches about 30 cm, add soil to the base, forming a small mound (hilling) to facilitate the penetration of the gynaephore and the fruit to form correctly underground.
- PollinationIf you grow indoors, facilitate cross-pollination by brushing the flowers with a small paintbrush.
Although it is possible to achieve harvests indoors, the yield is usually lower than that of outdoor cultivation due to the lower light intensity.
Complete Guide to Growing Peanuts: From Seedbed
An effective alternative to start is germinate your peanuts in a seedbed, especially useful in cool climates or if you want to get a head start on the season.
- Seedbed materials: : Recycled trays or cups with drainage holes, fine-nozzle watering can, plastic wrap or perforated lids to maintain humidity, light substrate (coconut fiber, perlite, compost).
- Sowing in seedbedFill the containers with moistened substrate, sow the peanuts 2-3 cm deep, cover them and press lightly.
- Conditions during germination: Temperature between 20 and 30°C; avoid direct sunlight, but keep the soil in a well-lit environment. Water gently and frequently to keep the substrate moist but not waterlogged.
- Protect the seeds from rodents with a fine mesh and keep the seedbeds ventilated.
Germination in a seedbed promotes better initial development and facilitates transplanting to its final location. For more details, see our guide on how to germinate. How to plant and grow peanuts.
Stages of growth and flowering of peanuts
After planting, a vegetative growth phase begins, during which the plant develops leaves and stems. Later, yellow or white flowers appear. When pollinated, they will produce the fruits underground thanks to the development of the gynophore.
- Avoid touching the flowersThey are very delicate; an accidental drop could result in the loss of future peanuts.
- Flowering to fruiting: When the base of the flower stem enters the substrate, the plant begins to form the peanut pod.
- Underground growth: One of the unique features of the peanut plant, unique among food crops.
During this period, keep the soil aerated, free of weeds, and constantly moist, but not flooded.
Essential care throughout the cycle
Proper management makes a difference in productivity:
- Keep the soil free of weeds: Removing weeds promotes nutrient absorption and prevents competition.
- Avoid handling stems and flowers: Damage at this stage can affect final fruit production.
- Control of pests and diseases: Watch for the presence of fungi (caused by overwatering or lack of ventilation), aphids, and rodents. Using natural repellents such as mint or castor oil helps with rodents, and treating with organic products is recommended if pests appear.
- Fertilization: The initial addition of compost is usually sufficient, since the peanut fixes its own nitrogen.
When to harvest and how to harvest peanuts
The complete peanut cycle from planting to harvest takes 4 to 5 months under optimal conditions. The most reliable indicator of ripeness is the yellowing and drying of the leaves.
- Harvest time: When the foliage turns yellow and begins to dry out.
- Plant extraction: Do this carefully to avoid breaking the pods. Shake off excess soil and let the fruit air dry for a few days.
- dryingSpread the pods in a dry, well-ventilated place before eating or storing. Moist pods will be recognizable by their whitish color: let them dry completely before roasting.
- Reuse of roots: By containing nitrogen-fixing nodules, you can leave the roots in the soil to enrich the substrate and provide nutrients for future plantings.
Common mistakes and extra tips from experts
- Do not use industrial seeds: Always raw and unroasted seeds.
- Avoid compacted soils:Compaction seriously hampers pod formation.
- Prevent rotOverwatering leads to fungus and disease.
- Protect from rodents: Use nets or repellents and frequently monitor the seedbeds.
- Controlling indoor pollination: Hand pollination facilitates fruit formation.
Do not forget that success in grow peanuts It lies both in the constancy and observation of the plant, as well as in the adequate preparation of the land and the control of environmental and irrigation factors.
Frequently asked questions about peanut cultivation
- Are commercial supermarket seeds useful? Only if they are raw, not roasted or salted, and preferably with the shell.
- How many peanuts come from each plant? It depends on the variety and conditions, but one plant can produce several dozen fruits.
- Can peanuts be perennial? No, peanuts are annual and must be planted every season.
- Can it be transplanted? Yes, but do it when it's young and do it carefully, because the roots are very sensitive.
Links and resources for fans
- How to grow coconut
Discover the peanut cultivation It brings young and old closer to horticulture, encouraging patience, observation, and respect for the natural growth of food. In addition to offering a educational experienceGrowing peanuts at home guarantees a healthy, fresh snack that you've grown yourself, and allows you to take advantage of their unique legume nature and their contribution to soil fertility. Get started, experiment with the different stages and varieties, and enjoy every step, from planting to harvesting and roasting your own peanuts.