An Ostrich Fern under the right conditions can grow up to between three and six feet which can make them quite a striking feature in your garden. Luckily ferns tend to grow quite well by themselves without your help. They will often thrive in the wild and take over where other plants originally were before dying back in the winter months.
But it’s not just a questions of how big do Ostrich Ferns get? but also how fast do ostrich ferns spread? As the spread of these plants can also affect the look and feel of your garden, especially if they spread enough to take over the space.
If you want to ensure that your plants grow well and are able to reach their maximum height then there are some things you can do to help them.
First make sure that they are watered regularly. Ostrich ferns are thirsty plants and will require a lot of water. If they’re outside then the rain should do much of this work for you but make sure you water them if you experience a dry spell. If they’re indoors then you will have to water them regularly.
Next is about ensuring that they’re receiving the right amount of light. Like all plants Ostrich Ferns need light to survive but they tend to need less light than other plants. Opt for bright indirect light or even shade for these ferns. A bit of exposure to direct sunlight should be fine but they don’t want to be sitting under the suns rays all day long.
Next think about fertilising your plants to help them grow but be aware that ferns can be sensitive to fertiliser. One way to overcome this is to water them first and then fertilise them so that the roots soak up the water first. Also be sure to dilute your plant feed so it’s not as strong.
So to summarise how big do Ostrich Ferns get? Between 3 to 6 feet but that will all depend on how you look after them, how much light they receive, how much they’re watered and whether or not they’re fertilised.