
To determine the time to start tomatoes in the southern hemisphere, refer to Worldwide Hardiness Zone maps.:
- Zone 3a: start seeds early April through mid-April, transplant in late May and early June
- Zone 3b and 4: start seeds mid-March through early April, transplant in mid-May to early June
- Zone 5 and 6: start seeds early March through mid-March, transplant in mid-April through early June
- Zone 7: start seeds mid-February through early March, transplant early April through early June
How late can you plant tomato plants?
Tomato plants can be set out in the garden in mid-March to early May after any danger of frost has passed. Some southern areas of Georgia can also produce a second crop of tomatoes when planted in late July. Tomatoes are warm-season plants that grow best at temperatures of 70 degrees to 80 degrees F and require six to eight hours of sunlight.
When to start growing tomatoes from seed indoors?
- Zone 3a: start seeds early April through mid-April, transplant in late May and early June
- Zone 3b and 4: start seeds mid-March through early April, transplant in mid-May to early June
- Zone 5 and 6: start seeds early March through mid-March, transplant in mid-April through early June
How to successfully plant and grow tomatoes?
● Siting: Plant where they'll get at least six hours of sun and the most heat possible. The ideal is a raised bed basking in reflected heat off a south-facing wall. ● Timing: Tomatoes usually can go into the ground by mid-May, when soil temperatures reach 50 degrees.
How soon to start tomato seeds indoors?
There is some debate on how early to start tomato seeds indoors. It is typically recommended to start them six to eight weeks before transplanting outside. Many gardeners, however, choose to start even earlier, up to 12 weeks before the expected transplant date, to give their seedlings extra time to grow before planting them out.

What is the best month to plant tomatoes?
Tomatoes are warm weather plants which need plenty of sun to thrive and grow best at temperatures between 70 and 75°F (21 and 24°C). Seeds are best sown under cover in March and April ready for harvesting from July to September.
Is it too late to start tomato seeds indoors?
Is it too late to start tomatoes? Definitely not. You can plant tomato seeds anytime in the spring.
When can I put my tomato starts outside?
Tomatoes are ready for transplanting into the garden when the seedlings are 3 to 4 inches tall, and the nighttime temperatures are consistently above 50 degrees.
How do you start tomato seeds indoors?
7:178:23How to Plant Tomato Seeds Indoors - YouTubeYouTubeStart of suggested clipEnd of suggested clipOkay I like to put my tray of seeds on top of the refrigerator. Until they germinate with my littleMoreOkay I like to put my tray of seeds on top of the refrigerator. Until they germinate with my little mini greenhouse cover. Here because it tends to be a little bit warmer on top of the refrigerator.
Can I start tomatoes indoors in February?
Yes, you can get some tomato seedlings started in February. These will be cold-hardy varieties that will need the protection of a wall of water, or similar heat cap. You can plant a few tomatoes now, but this won't be all of your plants for the season.
Is March too late to start seeds?
No, it's not too late to plant seeds! You can start seeds year-round. It depends on what you would like to accomplish after planting your seeds. There is short-season gardening, hydroponic growing, indoor gardening, jump-start growing to have huge plants to transplant in spring, etc.
How cold can tomato starts tolerate?
Tomato plants can tolerate temperatures above freezing (over 32 degrees Fahrenheit) and survive. A temperature of 32 degrees Fahrenheit or below will result in a frost or freeze that will kill unprotected tomato plants.
How cold is too cold for tomato starts?
Tomatoes are not cold-weather crops. Temperatures below 50 degrees Fahrenheit can prevent the seedlings from growing.
How cold can tomato starts get?
Any temperature below 50° F is too cold for tomato plants. The tomato seedlings won't germinate, the young tomato plants will have stunted growth, and the mature tomato plants won't produce fruit. A temperature below 32° F will cause frost that will kill the tomato plants and fruits.
Can you start tomatoes indoors too early?
A: The short answer is yes; it is way too early to start tomatoes. Tomatoes are generally started about six weeks before the last local frost date. If, however, you have a greenhouse, solarium or other warm area, you can start tomatoes very early and have large plants for setting out this spring.
When should I start tomato seeds in the house?
Sow indoors Tomatoes are easy to grow from seed sown indoors in warm conditions. Sow from late February to mid-March if you'll be growing your crop in a greenhouse, or from late March to early April if they'll be outside. Fill a small pot with seed compost, water well, then sow three or four seeds on the surface.
Do you have to let tomato seeds dry before planting?
Spread the seeds onto paper towel to remove most of the water, then transfer them to a non-stick surface such as a dinner plate. Dry the seeds in a warm place out of direct sunlight. It will take two to three weeks for the seeds to completely dry out.
How late can you start tomatoes from seed?
This depends on your first frost date and the days to maturity for the type of tomato. As long as the days to maturity are less than the number of days away from your first frost date you can still plant. For most areas, you should still be able to plant late from late June to late August with no problem.
What month do you start tomato seeds indoors?
Generally, the time to start your seeds is about 6- 8 weeks before the last expected spring frost date in your area, planting the seedlings outdoors about 2 weeks after that date.
What happens if you start seeds late?
But if you start too late, they won't be mature enough for transplanting into the garden by spring. It takes a little practice, but in time you will be able to create your own seed planting schedule so you know exactly when to start each variety.
Is it too late to plant tomato seeds now?
Tomatoes are easy to grow from seed sown indoors in warm conditions. Sow from late February to mid-March if you'll be growing your crop in a greenhouse, or from late March to early April if they'll be outside.
When to Start Tomato Seeds
Choosing when to start tomato seeds indoors can be tricky. Source: ShebleyCL
Tomato Seed Starting Methods
Once they’ve germinated, tomatoes will need good lighting to thrive. Source: Stephen D. Melkisethian
Seedling Care
Choose a sunny window or supplement with grow lights. Source: James Mooney
Frequently Asked Questions
Care well for your young tomato plants and you will be rewarded. Source: LynnK827
When Should I Start Planting Tomato Seeds Indoors?
To produce seedlings in spring, germinate your tomato seeds indoors as early as 4-7 weeks before the last frost date. You can plant your seeds or seedlings directly outside, as soon as the last frost, but it is better to wait until all danger of a late frost has passed.
How long do tomato seeds last?
Tomato seeds will germinate without problems, if they are recently harvested, or are less than 2 years old. If stored properly, they will remain viable for 2-5 years. Germination will gradually decline after the second year, so “older” seeds will benefit from some extra help.
Why are my tomato seeds not germinating?
The most common reasons why tomato seeds fail to germinate are: the soil is too cold below 50°F (10 °C) or too hot above 95°F (35 °C), you applied too much or too little water, soil-borne pathogens in the soil attacked them before emergence, or the seeds are just too old.
What temperature should tomato seeds be?
The best temperatures for germination are between 70-80 °F (21 -27 °C). Keep your seeds in a warm and dark place, and although tomato seeds do not need sunlight to germinate, it is better to transplant them to a sunny spot once they start to develop a root.
How long does it take for tomato seeds to germinate?
If soil temperatures are between 65-85°F (18-29 °C), it will take 6-8 days for tomato seeds to germinate. Normally, it is better to let the soil warm up above 55°F (13 °C), or seeds could take up to 4-5 weeks to germinate and will be more susceptible to fungal diseases.
How to grow tomato seedlings?
To grow your tomato seedlings, you can use small 3-4” (7.5-10 cm) pots or similar containers. The best substrate to start tomato seeds in, is that which has no soil in it. You can use a commercial seed starter mix, potting mix, or soiless mix, but check if they are sterile.
How much sun do you need to grow tomato seeds?
To plant your tomato seeds outside, choose a sunny spot with at least 6-8 hours of direct sunlight. In the Northern hemisphere, choose the south-facing side of the house for maximum sun exposure. In the Southern hemisphere, choose the north-facing side for the same purpose.
What is the Best Tomato Fertilizer?
Which tomato fertilizer you use will depend on the current nutrient content of your soil. Before you start fertilizing tomatoes, it is best to have your soil tested.
What to do if you can't get a soil test?
If you are unable to get a soil test done, unless you have had problems in the past with sickly tomato plants, you can assume that you have a balanced soil and use the higher phosphorus tomato plant fertilizer.
When fertilizing tomato plants after the fruits have set, first make sure the tomato plant is watered well. answer?
When fertilizing tomato plants after the fruits have set, first make sure the tomato plant is watered well. If the tomato plant isn’t watered well before being fertilized, it can take up too much fertilizer and burn the plant.
Do tomato plants need fertilizer?
Tomatoes, like many annuals, are heavy feeders and do better when provided with plenty of nutrients to grow through the season. Fertilizers, either chemical or organic, can help provide the extra nutrients that tomatoes need to grow quickly. But what is a good tomato fertilizer?
Can you fertilize tomatoes with too much nitrogen?
When fertilizing tomato plants, be careful that you don’t use too much nitrogen. This will result in a lush, green tomato plant with very few tomatoes. If you have experienced this problem in the past, you may even want to consider simply providing phosphorus to the plant instead of a complete fertilizer for tomatoes.
Do Tomato Plants Fruit More Than Once?
Indeterminate tomato plants will fruit continually throughout the season. The plants can produce staggering numbers of fruits if kept healthy. I grow primarily indeterminate tomatoes and they usually only stop fruiting when the weather gets cold.
How long can tomatoes survive in a cold climate?
If you happen to live in a climate that does not get a hard freeze (hardiness zones 10b+), then your tomatoes can likely survive for multiple years. For temperate regions, the plants will die to frost, or can be overwintered indoors.
How do tomatoes grow?
Tomatoes follow a simple life cycle, going through two major stages when planted from seed. Put simply, the plants start as seedlings, grow quickly to form branches and leaves, begin producing flowers, and finally ripen fruits.
Why do plants die in freezing weather?
Why does freezing weather kill plants? Non-cold hardy plants will die in a hard freeze due to ice crystals rupturing the cells. Water expands when it freezes, and plants are made up of primarily water – a bad combination! Some plants ( deciduous trees, etc.) enter a dormant state to survive winter weather, but many do not, becoming susceptible to frost damage.
How to grow a sage plant in water?
Simply snip off a main branch ( not a leaf stem) and submerge the cut end in water. Keep the plant indoors near a window and wait for the roots to begin growing into the water.
What is the first stage of a plant?
The first stage is known as vegetative growth . This is because the plant is busy producing lots of new foliage, branches, and a strong main stem.
Where do tomato roots come from?
Tomatoes readily produce roots from main stems across the plant . If the weather is particularly humid, it is common to see the start of these roots around nodes. They look like small white nubs and are known as “adventitious roots.”
