I have a anthurium that is growing rooted on a volcano rock and it's just now starting to bloom again. Try repotting it in a slightly larger container and use some bloom booster fertilizer and see if that helps.

for the fertilizer, use the one which formulated for orchids blooms, they work best for Anthuriums in my experience...

Izhar

I can only assume your plant is likely a hybrid since those are the most commonly sold forms of the nearly 1000 species of Anthurium.

The plant is likely a combination of Anthurium andreanum and Anthurium scandens since those are two of the most common house plant species.

Contrary to popular belief these plants don't grow naturally in soil but instead grow on the branches of trees as an epiphyte. Both of these species are common to the rain forest of Central America and A. scandens contnues into South America.

Both are very free bloomers but you should know (as you stated) the inflorescence is composed of a spathe and spadix and neither is a flower. The term "blooming" refers to the tiny flowers found on the spadix, not the colorful inflorescence.

The true flowers are nearly microscopic and grow only on the spadix for a short period of time (2 to three days) after the spathe first opens. The flowers contain both male and female sexual organs (perfect flowers) and are capable of self pollination although nature would prefer pollen from a different plant be brought to a specimen and encoruages this by only making the female flowers fertile for a single night while the male portion of the flowers only produce pollen on the day after the female flowers are receptiive. Sorry for the botany lecture!

In order to keep the plant healthy and producing larger numbers of inflorescences the soil needs to be very fast draining. Regular potting soil is not a good choice for any Anthurium. They also prefer bright light (which is why they live in trees) as well as good moisture. It rains close to 8 months out of the year where they grow but the total volume of water varies due to the location. Lots of sites and growers tell you to keep them away from a window but I grow many hung just feet beneath the Lexan panels of our atrium. I have long believed in the motto "listen to Mother Nature, her advice is best" and do my best to research each plant and grow them as near the way Mother Natures does as is possible.

Give the roots plenty of rom to spread and poke arond in the loose around the same way their freely hanging roots do on the tree by using a mixture simulating the dead vegetation they collect around their roots on the limb of a tree. This is easily done and several methods exist. The formula is not critical!

Some people prefer about 50% orchid potting mix with the balance a good potting soil and some Perlite. On the advice of the greenhouse manager at the Missouri Botanical Garden my personal preference is about 40% good soil (moisture control mix works well), about 30% peat moss to similate dead vegetation, roughly 10% Perlite and the balance orchid bark and charcoal such as aquarium charcoal. Adding extra compost is great.

Keeo your plant near a bright window with the mix evenly damp all the time. Don't allow them to dry out to any degree. Remember, if you want them to produce a spathe you need to try to copy Mother Nature.

Some will argue with me and that is fine but since Anthurium live in a rain forest anything you can do to keep the humidity higher (misting) does help and feel like they are still in the forest (or Hawaii) will help your effort.

They love fertilizer, so offer it in diluted form about every two weeks, at least once a month. Don't over fertilize! Miracle Grow 10-10-10 does fine but if you have an orchid fetilizer with extra additives that works great as well. My preference, based on the advice of expert growers, is 13-13-13 or 14-14-14 but both can be difficult to find.

We grow close to 100 species of Anthurium in our artificial rain forest and you can see some photos at the link below. Never fear, we sell absolutely nothing and there is no advertising of any kind on the site. I created the site to share info, not make money. If you look around you'll find over 300 pages of info and I do my best to have a good botanist read each of them. Please don't think you will be inudated with technical words! I use them but also try to explain them all in terms that are easily digested.

Look through the plant collection index and you will find a list of some of the species we grow. Be sue and scroll down the page and you will find a link to an article in the lower right corner explaining how Anthurium grow in the rain forest.

Steve

Here is a link that might be useful: The Exotic Rainforest