In brief: Sow pepper seeds from February/March in seed trays on a windowsill. The seeds need constant warmth of 25°C and light to germinate. After transplanting, gradually acclimate the young plants to outdoor temperatures. From mid-May, plant them in the garden or in large containers.
Why grow peppers from seed? The crucial head start
Peppers are native to warm regions and have a long growing season. In our climate, summer alone is often not long enough for plants to grow from seed to fully ripened fruit.
Starting the plants indoors gives them several valuable extra weeks. They begin the outdoor growing season as strong young plants, resulting in an earlier and more abundant harvest.
The process is simple. You need seeds, seed trays or pots, seed-starting mix and a warm, bright spot. In the seed shop, you will find a wide selection of varieties.
Choosing the right variety: flavor and growth habit
Not every pepper variety is equally suited to growing in a garden or on a balcony. Check the listed mature height and days to maturity.
Compact varieties are ideal for containers. Plants grown outdoors need more space and often benefit from a support. The variety you choose determines the fruit's flavor, color and uses.
The hardy, high-yielding block pepper is an excellent choice for beginners. The classic variety reliably produces meaty, sweet fruit.
The 'Mavras F1' variety is highly resistant to common pepper diseases. Its dark foliage is not only decorative but also a sign of strong, healthy growth.
How and when should I sow pepper seeds?
The ideal time to sow is from mid-February through the end of March. Sowing later shortens the harvest period.
Fill seed trays with low-nutrient seed-starting mix. Press the seeds about half a centimetre deep into the mix, then cover them lightly.
Mist the mix with warm water until evenly moist. Cover the tray with a clear lid or plastic wrap to create a warm, humid environment.
Expert tip
Before sowing, soak larger or older seeds in lukewarm chamomile tea for 12 hours. This softens the seed coat, speeds germination and has a mild disinfecting effect.
The ideal spot for germination: warmth and light
Place the seed trays in a very warm spot. A heated propagator mat or a spot above a radiator works well.
Keep the soil temperature consistently between 22 and 28 degrees Celsius. Cold temperatures can significantly delay germination or prevent it altogether.
Seeds do not necessarily need light to germinate. As soon as the first seed leaves appear, however, they need a bright spot out of direct midday sun. A south-facing window is ideal.
Caring for seedlings: From seed to young plant
The first seedlings appear after one to two weeks. Remove the cover at this point to prevent mold.
Keep the mix evenly moist, but not soggy. Water from below or carefully with a spray bottle.
Avoid drafts. Cold air can damage delicate seedlings. Turn the tray regularly so the seedlings grow straight.
Important note
Never use ordinary garden soil or nutrient-rich potting mix to start seedlings. It is too heavy, often contains weed seeds and can cause root rot. Always use sterile seed-starting mix.
Transplanting seedlings: Room for strong roots
When the first or second pair of true leaves appears after the seed leaves, it's time to transplant the seedlings. Separating them gives each plant room to grow.
Carefully lift the seedlings from the soil with a dibber or the handle of a spoon. Hold them by the leaves, not the delicate stem.
Plant each seedling in its own small pot filled with slightly more nutrient-rich vegetable potting mix. Gently firm the soil and water the plants.
Find everything you need for this job and ongoing care in the garden and plant care supplies category.
Hardening off: Getting plants used to the outdoors
Pepper plants grown indoors are not used to wind, direct sunlight or nighttime temperatures below 15 degrees. Planting them outside all at once can shock them.
Start hardening off the plants about two weeks before you plan to plant them outside. On warm, calm days, place them outdoors for a few hours in a sheltered spot.
Increase their time outdoors each day. Keep them out of strong midday sun and bring them back inside at night.
The most common mistake is changing conditions too quickly. A plant that has not been hardened off can have its growth set back by up to three weeks, costing valuable time during the short growing season.
Choosing a final spot: Garden bed, container or greenhouse
Planting outdoors
Wait until after the last frost, around mid-May, before planting peppers outdoors. The soil should have warmed up by then.
Choose the sunniest, warmest spot in your garden. A south-facing wall or sheltered area is ideal. The soil should be deep, loose and rich in organic matter.
Space the pepper plants 50 centimetres apart. Before planting, mix compost or an organic slow-release fertilizer into each planting hole. Water thoroughly after planting.
Growing in containers
To grow peppers on a balcony or patio, choose a large container with a capacity of at least 20 litres. Drainage holes are essential.
Add a drainage layer of expanded clay and fill the container with high-quality vegetable potting mix. A plant support will help keep the peppers upright.
Place the container in a sheltered spot in full sun. Container-grown peppers need extra attention when it comes to watering and feeding. In the garden watering section, you will find suitable systems.
Additional advice
Mulch the soil around pepper plants with straw or grass clippings. This retains moisture, suppresses weeds and protects shallow roots from overheating. The soil stays warm and moist for longer.
Care during the main growing season: watering, fertilizing and pruning
Peppers are heavy feeders. They need plenty of nutrients to produce fruit. Fertilize every two weeks with a liquid vegetable fertilizer, or use an organic slow-release fertilizer when planting.
Water regularly and thoroughly. The root ball should never dry out completely. However, avoid waterlogging. Water at soil level to keep the leaves dry and prevent fungal diseases.
Remove the first flower, known as the crown flower, at the first fork. This encourages bushier growth and ultimately a higher yield. Later, you can remove weak side shoots.
Our fertilizers category offers organic and mineral nutrient sources.
Harvesting and storage: the reward for your hard work
Depending on the variety and weather, the harvest season begins in July and can last into October. Harvest the first fruits while they are still green to encourage the plant to continue producing new fruit.
Allow fruits that ripen later to develop their full color on the plant. They will then develop their full flavor and highest vitamin C content. Always cut peppers off with a sharp knife or pair of scissors to avoid damaging the shoots.
Freshly harvested peppers are best stored unwashed at around 10 degrees Celsius. A cool cellar or the crisper drawer of the refrigerator are suitable. Use practical harvesting aids such as the .
Common problems and how to solve them
Aphids like to infest young shoots. Rinse them off with a strong jet of water or introduce natural predators.
Gray mold can develop in excessively wet and cold conditions. Remove affected parts of the plant immediately and improve ventilation.
Flower drop is often a sign of drought stress, nutrient deficiency or insufficient pollination. Ensure consistent moisture, fertilize regularly and gently shake the plants in calm weather.
With the right preparation and care, nothing stands in the way of a plentiful pepper harvest. Browse our garden and outdoor range for everything else you need.
Frequently asked questions
- When should you sow pepper seeds?
- Start sowing indoors between mid-February and the end of March. Peppers have a long growing period and need this head start to produce fruit in summer. Later sowings often result in lower yields.
- What temperature do pepper seeds need to germinate?
- Pepper seeds germinate best at a constant 22 to 28 degrees Celsius. A warm, bright spot, such as above a radiator, is ideal. Use a heat mat for seed trays to stabilize the temperature and speed up germination.
- How deep should you plant pepper seedlings?
- Do not plant young peppers any deeper than they were in their seed tray or pot. Unlike tomatoes, peppers do not develop additional roots along the stem. Planting too deeply can encourage rot. Loosen the soil thoroughly before planting.
- How often should you water pepper plants?
- Water peppers regularly and thoroughly, but avoid waterlogging. The soil should remain evenly moist. Daily watering is necessary during dry periods. Always water at soil level to keep the leaves dry.
- Why do pepper plants drop their flowers?
- Flower drop can be caused by temperatures that are too low, drought stress, nutrient deficiency or a lack of pollination. Provide warm, sheltered locations, water regularly and gently shake the plants in calm weather to encourage pollination.
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