Central Garden & Pet Company (NASDAQ:CENT) shareholders would be excited to see that the share price has had a great month, posting a 26% gain and recovering from prior weakness. The last 30 days bring the annual gain to a very sharp 34%.

Following the firm bounce in price, given around half the companies in the United States have price-to-earnings ratios (or "P/E's") below 16x, you may consider Central Garden & Pet as a stock to potentially avoid with its 21.7x P/E ratio. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's as high as it is.

With earnings that are retreating more than the market's of late, Central Garden & Pet has been very sluggish. It might be that many expect the dismal earnings performance to recover substantially, which has kept the P/E from collapsing. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Check out our latest analysis for Central Garden & Pet

How Is Central Garden & Pet's Growth Trending?

There's an inherent assumption that a company should outperform the market for P/E ratios like Central Garden & Pet's to be considered reasonable.

Taking a look back first, the company's earnings per share growth last year wasn't something to get excited about as it posted a disappointing decline of 16%. This has erased any of its gains during the last three years, with practically no change in EPS being achieved in total. So it appears to us that the company has had a mixed result in terms of growing earnings over that time.

Turning to the outlook, the next three years should generate growth of 3.9% each year as estimated by the four analysts watching the company. That's shaping up to be materially lower than the 13% per annum growth forecast for the broader market.

With this information, we find it concerning that Central Garden & Pet is trading at a P/E higher than the market. Apparently many investors in the company are way more bullish than analysts indicate and aren't willing to let go of their stock at any price. There's a good chance these shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the growth outlook.

The Bottom Line On Central Garden & Pet's P/E

Central Garden & Pet shares have received a push in the right direction, but its P/E is elevated too. We'd say the price-to-earnings ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

Our examination of Central Garden & Pet's analyst forecasts revealed that its inferior earnings outlook isn't impacting its high P/E anywhere near as much as we would have predicted. When we see a weak earnings outlook with slower than market growth, we suspect the share price is at risk of declining, sending the high P/E lower. Unless these conditions improve markedly, it's very challenging to accept these prices as being reasonable.

Plus, you should also learn about this 1 warning sign we've spotted with Central Garden & Pet.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.