Prepare your garden for spring: the complete guide to start the season without problems

What to do in February: cleanup, pruning, and soil testing

February is the ideal time to start preparing your garden for spring. Temperatures start to rise, but it can still be cold in some areas, so it's important to act carefully. Cleaning up the garden is the first task. Remove any leftover debris from last season, such as dead leaves, fallen branches, or invasive plants. This not only improves the garden's appearance but also prevents disease from spreading.

Pruning should also be part of your February tasks. On flowering plants like roses, it's a good idea to prune away dry, damaged branches. Evergreen plants like rhododendrons or azaleas should be pruned after flowering. For shrubs like rosemary or lavender, prune lightly to keep their shape and encourage new branch growth.

A key task in February is soil testing. This tells you the soil's pH and nutrient composition, which is essential for choosing the right plants and applying the correct fertilizers. You can get a soil test done at a specialized lab, which usually costs between $20 and $50 depending on the region. If you'd rather do it yourself, garden centers sell test kits for around $10 to $15.

For the soil test, collect a soil sample from several spots in the garden. Mix the sample well and send it to the lab. The results will tell you whether you need amendments like gypsum, organic matter, or specific fertilizers. This step is essential to make sure the soil is in optimal condition for spring planting.

March: first sowing, dividing perennials, and base fertilizing

March marks the start of the sowing season. It's the perfect time to plant flower, vegetable, and fruit seeds. Flower seeds like tulips, geraniums, and petunias can be planted from mid-March onward. Vegetables like lettuce, cucumber, and carrots are best sown in early March, once soil temperature reaches at least 10°C (50°F).

For successful sowing, make sure the soil is well fertilized. Base fertilizing means applying organic or mineral fertilizers before sowing. Organic fertilizers, like compost or manure, are ideal for improving soil structure and providing nutrients steadily over time. Minerals, like NPK (nitrogen, phosphorus, potassium), help correct specific deficiencies.

Besides sowing, it's important to divide perennial clumps. Plants like iris, chrysanthemum, and camomile should be divided every 3 to 5 years to stay healthy and vigorous. Division is done in spring, while the plant is still actively growing. To divide a clump, use a sharp knife and cut the roots and stems into balanced sections. Make sure each section has at least three growth points.

Dividing clumps not only improves plant growth but also prevents disease buildup. After dividing, plant the new sections in fresh, well-fertilized soil. Water generously after planting to help the roots establish.

Soil preparation: amendments and improving structure

Soil preparation is essential to a successful growing season. The soil should be well aerated, with good structure and enough organic matter. To improve soil structure, it's a good idea to add amendments like compost, sand, clay, or manure.

Compost is an excellent amendment for improving soil fertility and water retention. You can make it from organic waste like fruit peels, vegetable scraps, dry leaves, and manure. Composting can take 3 to 6 months, depending on conditions. Once ready, mix the compost into the soil at a 1:3 ratio (1 part compost to 3 parts soil).

If your soil is clay-heavy, add sand to improve drainage. If it's sandy, mix in clay to improve water retention. To improve soil structure, use a garden fork to turn the soil to a depth of 20 to 30 cm (8 to 12 in). This lets the amendments blend in evenly and improves aeration.

Besides amendments, it's important to run a nutrient analysis to identify soil deficiencies. Soils low in nitrogen benefit from nitrogen-rich fertilizers, while those low in phosphorus need phosphorus-rich ones. Potassium is essential for plant resistance to disease and environmental stress.

Checking the irrigation system before the season starts

An efficient irrigation system is key to a successful garden. Before spring arrives, it's important to inspect and maintain your irrigation system. Check that hoses, pipes, and nozzles are in good condition with no leaks or clogs. Replace any damaged parts and make sure the system is clean and working properly.

If you use drip irrigation, make sure the emitters are free of debris and the flow is steady. Emitters should be checked every 2 to 3 months to prevent clogging. Also adjust watering frequency to match plant needs. In general, plants need between 2 and 4 liters of water a week, depending on climate and time of year.

It's a good idea to install an irrigation timer, which lets you schedule watering frequency and duration. This prevents water waste and ensures plants get the right amount. For large gardens, an automatic irrigation system is ideal. If you don't have one, water manually with a hose or watering can, but make sure to water evenly and avoid water pooling around the roots.

It's also important to check the drainage system. Good drainage prevents water from pooling in the soil, which can cause waterlogged roots and disease. If your soil tends to get waterlogged, consider installing drainage channels or adding drainage materials like sand or gravel.

Preventive pest control before pests appear

Preventive pest control is an essential part of preparing your garden for spring. Pests can damage plants, reduce yields, and affect crop quality. To prevent them from showing up, it's important to keep the garden clean and healthy.

One of the best practices is crop rotation. Rotating plants from year to year helps prevent pests and diseases from building up in the soil. For example, if you plant tomatoes this year, avoid planting them in the same spot next year. Instead, plant legumes or vegetables that aren't susceptible to the same pests.

It's also a good idea to use biological control methods. Beneficial insects, like parasitic wasps or ladybird beetles, can help control pests naturally. You can also use organic products like neem oil or pepper oil, which are effective against pests like aphids and fruit flies.

It's important to monitor the garden regularly to catch any sign of pests early. Check plants for signs like spots, browning leaf edges, small insects, or eggs. If you spot an infestation, act quickly to keep it from spreading. In severe cases, consider using specific pesticides, but be sure to follow the manufacturer's instructions and safety guidelines.

Week-by-week task calendar for April-May

April is the ideal time to start sowing the plants that are more sensitive to cold. Below is a week-by-week task calendar for April and May to help keep your garden in top shape.

Week 1 of April:

• Sow flower seeds like tulips, geraniums, and petunias.
• Start dividing perennial clumps and plant the new sections in fresh soil.
• Check the irrigation system and make sure it's working.
• Apply base fertilizer to the soil to improve fertility.

Week 2 of April:

• Sow vegetables like lettuce, cucumber, and carrots.
• Do a general garden check-up to spot any issues.
• Apply organic fertilizer around plants to improve nutrition.
• Start watching the garden for signs of pests or disease.

Week 3 of April:

• Continue sowing plants and seeds according to your local planting calendar.
• Do a light pruning on flowering plants to encourage growth.
• Check the irrigation system and adjust frequency based on soil moisture.
• Apply mineral fertilizer to areas with specific nutrient needs.

Week 1 of May:

• Do a more thorough pruning of flowering and fruiting plants.
• Start watering plants more often as temperatures rise.
• Check the irrigation system to make sure it's working correctly.
• Apply a foliar fertilizer to improve plant nutrition.

Week 2 of May:

• Continue sowing plants according to your planting calendar.
• Check the garden for pests and disease.
• Apply biological or organic control methods if you spot pests.
• Check plants to make sure they're growing in optimal conditions.