• 08/05/2025 19:00

When to Plant Tomatoes Outdoors: Tips for Gardeners

Find out when and how to plant tomatoes to achieve a generous harvest. Practical tips, timing, planting schemes, and seedling care included.Find out when and how to plant tomatoes to achieve a generous harvest. Practical tips, timing, planting schemes, and seedling care included.

Growing tomatoes is one of the most popular gardening practices in Ukraine. These tasty and nutritious vegetables thrive in our climate but require the right approach to planting. Timely planting, proper soil preparation, and appropriate care help achieve a healthy and generous harvest. In this article, Baltimore Chronicle will explore all the key stages—from seed selection to planting in the ground.

Learn when it is best to plant tomatoes, how to prepare them for planting, which planting schemes are most effective, and how to care for the plants to maximize your yield.

Best Time to Plant Tomatoes: Planting Dates by Region

The time to plant tomatoes depends on climatic conditions and the chosen growing method—outdoors or in a greenhouse. The main rule is to transplant seedlings after the risk of frost has passed.

Approximate Planting Dates:

  • Central Ukraine: May 5–15
  • Southern Ukraine: April 25 – May 10
  • Northern regions: after May 15
  • Greenhouses: late April – early May

Temperature should also be taken into account. The optimal daytime temperature for planting is +18…+20 °C and not below +10 °C at night. Soil should be warmed up to +12…+15 °C.

How to Prepare Seeds and Seedlings for Planting

To grow strong seedlings, it is important to properly prepare the seeds and create favorable conditions for germination.

Seed Preparation:

  1. Select high-quality seeds.
  2. Soak in a saline solution (1 tsp per 200 ml of water) for 10 minutes.
  3. Disinfect in a weak solution of potassium permanganate.
  4. Soak in a growth stimulant (e.g., Epin, Zircon).
  5. Germinate in moist gauze at a temperature of +23…+25 °C.

Sowing for Seedlings:

  • Sow seeds 55–65 days before planting them in the ground.
  • Sowing depth: 0.5–1 cm.
  • Keep the container with seedlings in light at +20…+25 °C.

How to Prepare Soil for Tomato Planting

Well-prepared soil is half the success in growing tomatoes. Tomatoes prefer light, fertile, well-drained soil with neutral acidity.

Main Preparation Steps:

  • In autumn — dig up the plot with compost or humus.
  • In spring — loosen the soil and add wood ash, superphosphate, potassium salt.
  • 2–3 days before planting — water the plot with a weak potassium permanganate solution.

Avoid planting tomatoes where other nightshades (potatoes, peppers, eggplants) grew last year to prevent disease spread.

Tomato Planting Schemes: How to Plant Correctly

A proper planting scheme provides plants with enough space for growth, sunlight, and ventilation.

Most Common Planting Schemes:

  • Medium-height varieties: 50 × 40 cm
  • Tall varieties: 70 × 50 cm
  • Bush (determinate) types: 40 × 40 cm

Tomatoes are planted in holes 10–15 cm deep. If the seedlings are overgrown, they can be planted deeper—up to the first leaves—which promotes the formation of additional roots.

Tomato Care After Planting

After planting, tomatoes require regular care, including watering, feeding, pruning (pinching), and disease prevention.

Main Care Guidelines:

  • Watering: moderate, at the base of the plant, 1–2 times a week.
  • Feeding: first feeding 10 days after planting (chicken manure solution or complex fertilizer).
  • Pinching: removing side shoots to boost yield.
  • Tying: for tall varieties—tie to a stake or trellis.
  • Protection: spray with biological products against blight.

Common Mistakes When Planting Tomatoes

Even experienced gardeners may make mistakes that reduce yields.

Most Common Mistakes:

  • Planting too early or too late
  • Overwatering or underwatering
  • Overcrowded planting
  • Lack of pinching
  • Insufficient feeding

Comparison of Tomato Growing Methods

ParameterOpen GroundGreenhouse
YieldModerateHigher
Frost RiskHighLow
MaintenanceLess controlledRequires regular care
Growing SeasonMay – SeptemberApril – October
Disease ResistanceLowerHigher with control

How to Achieve a Good Harvest

A good tomato harvest is the result of choosing the right planting time, preparing healthy seedlings, quality soil, and providing systematic care. Don’t rush planting or ignore the specifics of the variety. It’s better to invest a bit more time in preparation and then collect buckets of juicy, tasty, and healthy fruits. Follow the advice in this article, and your tomatoes will reward you with a bountiful harvest!

Earlier we wrote about how to get rid of insects in your apartment in spring.

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