Planting Begonias From Seed

Begonia plant benefits

Begonias are very easy-care plants that will take either full sun or full shade.

If you have the itch to grow something and it’s not quite warm enough to plant begonia outside, growing them from seed can be a good idea. 

We’ll cover some details on how to grow begonia from seed and helpful information to keep in mind as your seeds germinate and grow into small begonia plants.

Why plant begonias from seed

There are a number of reasons you may want to grow your begonia from seed. 

The first, and already mentioned, is time. If you’re in the winter months, purchasing small begonia plants to grow may not be possible.

You can also save money, as begonia seeds are a fraction of the price of purchasing young plants at a nursery or garden center.

Finally, it gives you a feeling of satisfaction to grow the begonia plant from seed all the way through to the end of its lifecycle.

Varieties of begonias you can start from seed

You can plant most begonia varieties from seed. 

What temperature is ideal?

A begonia seed requires a certain temperature range in order to germinate. Outside of this optimum range, germinating your begonia seeds is still possible, but your success rate will be less.

Most plants’ ideal temperature range to germinate is 68 – 86 degrees Fahrenheit

When to sow the begonia seeds

Choosing the best time to sow your begonia seeds depends on when you are planning on planting them outside. 

Typically, begonia seeds should be planted 6-8 weeks before you plant to plant them outside. Check your seed packet for the specific timing of your planting.

It’s definitely possible to plant begonia outside of this window, but you may need to nurture the plant more inside before it’s warm enough to plant it outside. 

Knowing when to plant an annual outside can be tricky, so make sure it’s not too early in the season when you plant your begonia outside.

How long will it take for begonia seeds to germinate?

Your begonia seeds should germinate 7-14 days after they are planted.

This timeframe may change depending on how consistently you are keeping the soil moist and in the light. A seed that isn’t well taken care of will take longer to germinate or die before ever sprouting.

How to plant begonias from seed

To plant begonia from seed, you can follow the following steps

1. Purchase the begonia seeds & potting soil

This can be done at many garden centers or greenhouses. If seeds are not available this way, many online stores offer begonia seeds for sale.

Your begonia seeds will grow best in potting soil rather than topsoil, so make sure to purchase some potting soil to plant the seeds in.

2. Find a container to plant in

You’ll need a container for your soil and begonia seed. Seeds do not need much space to grow. In fact, you can plant multiple seeds in the same container and then separate the sprouts once they germinated and plant them in their own spot.

For a home solution, egg cartons or egg trays can be a good place to plant seeds and have them sprout. These containers provide more than enough room for a seed to germinate.

3. Plant your begonia seeds

To plant the begonia seeds, fill your container with potting soil. No need to fill it to the brim, as water runoff may overflow the container.

Now it’s time to plant your seed. The general rule of thumb with seeds is to plant them 2 to 3 times their length. You’ll want to error on the side of not planting them deep enough.

To plant the seed, you can poke a hole in the potting soil with your finger, or use a stick.

Cover the seed up with potting soil once you have placed the begonia seed in the hole.

4. Water your newly planted begonia seed

Water the begonia lightly. Be careful not to overwater it. A begonia seed only needs damp soil to begin its germination.

Transplanting begonia seedlings

After the begonia seed has sprouted, you can transplant it into another container.

To do this, push your finger down below the sprout and gently pull up so that minimal roots are damaged.

Once you have a free begonia sprout, you can plant it in another container and gently water it in.