Germination Time for Vegetable Seeds – How Long Do They Take to Grow?

Gardeners of all levels will greatly benefit from knowing the time it takes for a specific vegetable seed to sprout.

As a first step you will be able to determine when you should plant seeds and when to plant seeds. Additionally, it reduces lots of strain to your nerve system.

For instance is it important that the carrot didn’t sprout in five days, even if the time for germination can last between 14 and 15 days? On the contrary, isn’t it slightly too late?

To make it simpler to you, I’ve put together this list of the most commonly used time for sprouting a vegetable to make it easier for you.

Because temperature influences the germination of seeds, I’ve listed the ideal and minimum temperatures for the first sprouts to begin appearing.

Table of germination for vegetable crop seeds

Vegetables From sowing to the time of sprouting on the ground (days) From sowing to the seeds sprouting inside (days) Minimum germination temperature degF (degC) From the moment of sprouting until harvesting early crop seeds The number of days between the time that plants sprout to the harvest of medium-early or middle-late varieties From the moment of sprouting until harvesting late-maturing crop plants
Watermelon 10-15 7-10 59-63 degF (15-17 degC) 55-85 85-105 100 or more
Eggplant 10-14 8-10 55-57 degF (13-14 degC) 90-110 110-130 135 and above
Beans 4-8 3-5 37-39 degF (3-4 degC) 72-87 90-110 112-130
Peas 4-7 3-5 39-43 degF (4-6 degC) 45-60 60-95 95-120
Melon 7-10 5-7 59-63 degF (15-17 degC) 45-75 75-95 100 or more
Zucchini, Pattypan 7-8 4-6 50-54 degF(10-12 degC) 33-50 50-70 75 and over
Cabbage 4-6 3-5 35-37 degF (2-3 degC) 45-90* 90-130* 130-180
Cauliflower 4-6 3-5 35-37 degF (2-3 degC) 55-85 (25-75*) 85-100 (75-85*) 110 and more
Sweet Corn 6-10 4-6 45-50 degF (7-10 degC) 60-78 78-100 100 and higher
Onion 14-18 8-14 35-37 degF (2-3 degC) 83-120** 120-125** 130 and higher
Leek 20-22 10-12 54 degF (12 degC) 150-160 160-175 180
Carrot 15-20 9-12 39-41 degF (4-5 degC) 50-80 80-125 125-150
Cucumber 5-8 4-6 55-57 degF (13-14 degC) 40-45 45-50 50 or more
Sweet and Spicy Pepper 14-16 9-12 39-41 degF (4-5 degC) 90-110*** 110-135 135 and above
Radish 4-6 3-5 33-35 degF (1-2 degC) 20-30 31-35 36-45
Turnip 5-7 3-5 33-35 degF (1-2 degC) 35-65 65-110 110-120
Lettuce 8-10 4-6 35-37 degF (2-3 degC) 30-50 50-75 75-100
Beetroot 10-16 7-10 41-43 degF (5-6 degC) 60-100 100-110 Up to 130
Celeriac 15-18 37-41 degF (3-5 degC) 100-130 130-175 180-200
Tomato 5-8 4-6 50-52 degF (10-11 degC) 65-110 111-120 120 and above
Pumpkin 7-8 4-6 50-54 degF(10-12 degC) 75-100 100-120 Over 124
Green beans 6-10 4-7 50-54 degF(10-12 degC) 45-50 55-65 65-85
Garlic 10-17 35-41 degF (2-5 degC) 80-90 90-125 120 or more
Spinach 8-12 33-35 degF (1-2 degC) 15-25 25-35 35-40

Note

* The time for the cabbage to mature after the seedlings are planted in the ground.

*Onions cultivated from seedlings mature three weeks earlier.

*The process of maturation of peppers. The biological maturation takes place 20 days further.

green leaf vegetable garden rows

 

Shelf Life of Vegetable Seeds

Vegetables The weight 1,000 seeds (grams) The number of seeds per 1g (Pieces) Shelf Life (years)
  Optimal (Max)
Watermelon 30.0-140.0 15+-7 6 (8)
Eggplant 2.8-7.0 275+-25 4 (7)
Beans 650.0-2500.0 1+-0.5 5 (7)
Peas 150.0-350.0 4+-1 5 (6)
Melon 21.0-50.0 27+-6 6 (8)
Strawberries 0.9-1.3 1000+-300 2 (3)
Marrow 80.0-200.0 6+-2 6 (8)
Cabbage 2.0-6.5 350+-130 4 (5)
Corn 120.0-300.0 6+-3 5 (7)
Welsh onions and leeks 2.0-4.0 400+-150 3 (4)
Onion 2.8-4.5 350+-140 3 (4)
Carrot 0.6-2.5 850+-300 4 (5)
Cucumber 16.0-35.0 50+-20 6 (8)
Parsnip 3.5-6.0 300+-50 3 (3)
Pepper 4.6-9.0 200+-50 4 (5)
Parsley 1.0-1.3 900+-300 2 (3)
Garden rhubarb 7.0-11.0 150+-30 3 (3)
Radish 6.0-12.0 120+-20 4 (6)
Turnip 8.0-18.0 150+-10 4 (6)
Lettuce 0.6-2.50 1000+-300 3 (4)
Beet 10.0-26.0 60+-20 5 (7)
Celery 0.4-0.5 2000+-800 3 (3)
Tomato 2.6-3.3 250-300 6 (8)
Pumpkin 100.0-400.0 5+-3 5 (7)
Dill 1.2-2.4 500+-100 3 (3)
Green beans 150.0-550.0 3+-0.5 5 (7)
Spinach 7.0-13.0 125+-25 4 (7)
Sorrel 0.6-2.2 1350+-350 3 (3)

Remember that every seed has an expiration date , after which they cease to grow.

For instance the shelf life of celery seeds onion, leeks, sorrel and rhubarb is approximately 2 years; dill and parsley last for 3-4 years. peas and carrots, radish.

Turnips can last for 4 to 6 years, while watermelon and melons last for between 6 and 8 years.

There is a possibility to preserve beet seeds for as long as 20 years. However beans can be viable for as long as 700 years, before losing the ability to germinate.

There isn’t a absolute rule of thumb regarding how to store seeds of vegetables without affecting the germination process.

The seeds of many crops are stored for longer periods of time when certain conditions (proper temperature, humidity, and the tightness) are satisfied.

However, the storage conditions affect the germination process of seeds.

To determine if germination is occurring You don’t have to collect a large amount of seeds. It is possible to do so with just 8-10 pieces.

The seeds can be placed covered in gauze in an oven-safe dish or in foil for them to stay warm. Make sure to ventilate them at least once per day to avoid mold and then check to see whether they’ve developed.

Note Seeds that have sprouts or roots that have sprouted are seeds that have sprouted.

The time to spruce up for each crop is different based on the time of year (see the table above).

Do not bother to plant if your zucchini or radish seeds aren’t sprouting after seven or 10 days. They won’t sprout in your vegetable garden if they’ve not sprouted at home.

How to Accelerate Germination

It takes a long time seeds of crops such as celery, carrots, and parsley to sprout because the essential oils contained in their shells stop water from reaching the embryo.

So, prior to planting these plants, you’ll have to treat the seeds.

For these plants I prefer blotting paper or a piece of cloth for covering the seeds prior to setting them into a bowl that has an even layer of water that is 115-125 degrees (45-55 degrees Celsius).

I let them rest for around 15 minutes before going forward. It’s during this time that the majority of the essential oils will disintegrate.

Then, I wash the cotton cloth and seeds several times with cool water. Then, I dry them until they’re free of the cloth.

Here you go. It is possible to sow seeds. This way seeds will germinate faster.

How To Improve Seed Germination

In some instances, the tests showed that seeds had germinated successfully. After that, you put seeds in a pot for them to grow but they didn’t sprout. What do you do now?

Seedlings can easily “forced” out of the soil easily. However, it’s best to a tiny amount of seeds. Begin by breathing into a bag made of plastic that has your seed container in.

Then, you can quickly tie the bag , and then put it back into its original place. Seedlings will benefit from the large amount of carbon dioxide that you breathe from the bag. The first sprouts will begin to appear shortly.

Heating may speed up the process of germination. To achieve this, put seeds in an empty thermos filled with water and heated to a temperature of 115-125 degrees F (45-55 degrees Celsius). Then, place the seeds in it for at least 6 hours.

Avoid using this method to harvest tomatoes!

To ensure they are more durable To make them more durable, go through the process of hardening them first. Then, wash the seeds with saltwater.

It is also recommended to wash them using manganese-based solutions and colloidal silver.

Then, place the pot of seeds in the bag of plastic and place it in the refrigerator in which you can keep the seeds of your vegetables for between 10 and 12 hours.

For the next week, continue this procedure each day. The seeds were left at room temperatures over 12 hours. The remaining 12 hours will be stored kept in the fridge.

Stephanie

Stephanie

Went from a bad gardener to a half-decent one over 10+ years. Super happy to share my tips and tricks with you :)