Blue Star Creeper: A Complete Guide

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Are you contemplating ditching your yard and going with a more exciting ground cover plant? Blue star creeper is a tempting lawn solution, but you might not know exactly how to grow and care for this.

Well, we have got the answers to your queries. First things first: blue star creeper is super simple to plant and maintain. Botanically known as Isotoma fluviatilis, it’s a popular ground cover to work into a decorative landscape.

Being a low but fast-growing plant, it grows into a mass of deep green leaves with delicate creeping stems. They remain evergreen through the year.

To learn how to plant blue star creeper and care for it on your landscape, browse our complete guide.

Blue Star Creeper Overview

Frequent Names: Blue star creeper, Swamp isotome

Family: Campanulaceae

Origin: Asia, Australia, and New Zealand

Lighting: Partial to full sun

Bloom time: Early spring to early fall

Flower: Light blue

Growth Rate: Medium

Isotoma fluviatilis is a perennial herb that forms a low-growing mat. It was discovered by Robert Brown in 1810 and has been classified as Isotoma by George Bentham at 1864. It’s a ground cover with blue flowers. It is ideal for planting between paving stone, in the rock garden, or as an alternative for the yard.

Kinds of Blue Star Creeper

There are 3 sub-species for this plant you might want to try. They mostly differ in their leaf shapes and sizes.

Isotoma fluviatilis subsp. Australis

This subspecies of blue star creeper has corolla of 7-15 mm long using 5-13 mm long leaves. The width of leaves varies between 2-7 mm. The corolla is largely blue but you might even find some in pink color.

Isotoma fluviatilis subsp. Borealis

Borealis is more or less the same as Australis which frequently makes it difficult to distinguish between the two. The leaves are often 5-12 mm long and 2-5 mm wide. In the flowers, you’ll discover approximately 5-40 mm long pedicels. Corolla and lobes are inside and ovary is glabrous in Borealis.

Isotoma fluviatilis subsp. Fluviatilis

This is the most common form of blue star creeper.

Blue Star Creeper
image by: zharkikh –

Using Blue Star Creeper as a Lawn

Blue star creeper ground cover (Isotoma fluviatilis) is a no-fuss plant which operates well as a lawn substitute. It is also more than happy to fill in gaps between stepping stones, under shrubbery or above your spring-blooming bulbs.

In a height of just 3 inches, blue star creeper lawns require no mowing. The plant withstands heavy foot traffic and tolerates full sun, partial shade or full shade. If conditions are just right, blue star creeper will create tiny blue blossoms throughout summer and spring.

Considerations for Blue Star Creeper Lawns

Blue star creeper sounds like a perfect plant and it surely has much to give. The plant stands up in extreme weather, although it can seem a little ragged and worse for wear through cold winters and hot summers.

Blue star creeper is fuller and healthy if it will get a few hours of sun every day. Additionally, gardeners should be aware that blue star creeper is non-native into the United States. It’s a tendency to spread quickly, which can be a good thing.

However, the plant can become invasive in certain situations, particularly if it’s overwatered or even over-fertilized. Luckily, wayward plants are relatively easy to pull.

Blue Star Creeper Care

This plant is stunning no matter where you put itfilling the borders of a pond or forming a low, dense mat between stepping stones. Additionally, it is easy to care for — here’s what you need to understand.


Plant in sunny or partially sunny areas. They desire a sufficient amount of light to develop…full shade is not perfect if you reside in a warmer zone, planting blue star creeper at a location where it’s direct sunlight for most of the day will help keep it growing well.


For the best growth, it requires regular watering. In the very first year of growth proper watering is crucial, so that it can firmly establish itself in the soil. Following that, it becomes fairly drought-resistant. However, blue star creeper does not like to sit in water. So you’ve got to be cautious about where you plant it.

Avoid placing it in reduced areas that could be vulnerable to holding water . Despite its drought-tolerance, you still have to water it well during dry and hot weather to avoid death.


It prefers moist, well-draining soil which does not get overly hot in the summit of this day. As a ground cover, it works quite nicely when interplanted between larger trees, shrubs, or trees.


It’s not a heavy feeder, so you don’t even have to fertilize provided you have quality dirt. Nevertheless, a program of a general-purpose lawn fertilizer before the growing season can help recondition your soil prior to planting.


When growing in containers as an ornamental or houseplant, you can repot it will. When it starts to sew a marijuana, just divide it up into smaller pots, or size up your pot by about 1″ approximately.


If you want to disperse Isotoma fluviatilis, there are two methods to take action : by dividing the root ball or seeds.

The root ball is easily divided. Gently scrape the soil from the roots by either using sharp pruning shears or your hand. Divide the root ball and then plant it in your preferred pot or in the ground.

The next way is rather complicated to perform. Everything you need to do is to let the seed pods dry on the plant, then crush them in an air-tight container to collect the seeds. As soon as you have the seeds, then sprinkle them on a moistened seed starting mixture.

Once the seeds are evenly dispersed on the seed mix, put a paper on the container. Be certain that you leave a small gap between the container’s top surface and the dirt. This will give your blue star creeper seeds a place to sprout.

Maintain the container moist and in partial sunlight for 7 to 15 days. When the seedlings reach the six-leaf point, plant them in the ground or your desired location.


Taking into consideration the fact it isn’t native to the United States, it may spread rather quickly, making it invasive in nature.

This fast growth occurs when you over-water the plant or use more fertilizer than necessary. Consider using a deep landscape edging material to stop unwanted spreading, or you can hand pull any excess expansion easily.

Blue Star Creeper
image by: Forest & Kim Starr –

Blue Star Creeper Problems

So long as you’re keeping it well-watered and shielded, you should not have too many growing difficulties. It rarely gets into trouble with pests or diseases, but it might face some difficulties if you dismiss its growing requirements.

Growing Issues

If you water them a lot, the crops will quickly grow and distribute over the ground. While it might sound good to have a garden full of
Blue flowers, at some stage it will start to take over other regions of the yard or garden that you would rather dedicate to different plants.

Nevertheless, overwatering can also be a problem if you’ve got heavy clay soil that holds on to too much water.

Blue star creeper is not an invasive plant by classification, but it can grow in a pattern which resembles an invasive species if you make its growing environment beneficial to volatile growth.


You don’t need to be too concerned about pests when it comes to blue star creeper lawn care. The low-spreading plant isn’t bothered by pests. Additionally, you won’t need to worry about rabbits creating a home on your lawn as it’s resistant to them as well!


This groundcover with blue flowers is more likely to fungal diseases that halt the roots’ ability to grow and grow. Thus, it’s crucial that you plant it in places that are moist but well-drained to stop nasty fungal issues such as damping off, leaf spot, etc..


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