Frequently Asked Questions

Where can I buy your grass seed mix and other products?

On the “Dealer Locator” page on our website, you can select the product you are looking for and the city. It will tell you the closest garden center to you that carries the grass seed mix. Thanks for your interest, and thank you for writing in.

Does your Richlawn Turf Food get old or expire?

Richlawn Turf Food does not expire or lose its effectiveness as long as it remains dry and granulated. It is important to store it where it does not get moisture or it will cake up and render it unusable in the fertilizer spreader.

Hi. I have two small dogs, and I am trying to find a fertilizer that will green my lawn and present no danger to my dogs. How long would I have to wait before letting my dogs walk on the grass after fertilizing it?

Any of the Richlawn products can be used on your lawn and are safe for pets to be on the grass right after application. Follow the label directions and water the turf fertilizer in and once it’s dry, the dogs can romp about. Unlike some fertilizers that contain herbicides or fungicides, Richlawn is organic-based and does not contain harmful attributes

I'm interested in doing my own fertilization this year. Overwhelmed with how to proceed. Will you assist me which of your products should be used when? Also, do you recommend a drop or broadcast spreader?

I would recommend our Pro-Rich Turf Food. It has a higher nitrogen content which is ideal to get the lawn off to a healthy start. We have a fertilizer reminder that we send out over the season as the time comes for the next application. You can sign up for it on our website. As to the spreader, the type whether it is a drop or broadcast doesn’t really matter. It’s just a matter of personal preference.

I recently moved to the Denver area from Michigan. I have always been a Scott's fertilizer, but some of my neighbors told me I should switch to your Richlawn Pro-Rich. Why should I do that?

Because our soils are very different than other parts of the U.S., more alkaline and lacking in organic matter, fertilizers can make a difference in how plants respond. National brands are okay, but lack some of the micronutrients that are needed in our regional soil conditions. Richlawn fertilizers are formulated for the Rocky Mountain Region, plus they are organic-based and overall will help improve the structure of our alkaline, clay soils.

I am planning to apply Richlawn Turf Food, but possible snow and colder temperatures are expected. Is it safe to apply your product under these conditions?

It is perfectly safe and ideal to apply Richlawn organic-based lawn fertilizer prior to moisture. Cold temperatures will not inhibit the effect of the fertilizer. If you can, core-aerate the lawn prior to fertilizing so the nutrients will filter down into the soil and increase assimilation.

The Plant Doctor FAQ’s

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How long before you see the effect of an iron-rich application?

There are a couple of variables to consider; Assuming it was applied at the correct rate, and watered in, you should see results typically in 5-6 days after application.

Can I slit seed in the heat of the summer? I am using an Exmark slit seeding machine. I am wanting to fill in thin spots or areas that have died back due to exposure (south-facing), high traffic spots and the like.

I generally do not recommend seeding turf grasses in the heat of summer, unless you are committed to diligent watering and upkeep. My recommendation is to wait until early to mid-September. Weather conditions are generally cooler and there is less competition from weeds.
For more details on seeding and caring for lawns in our region, please refer to my newest book: ROCKY MOUNTAIN Getting Started Garden Guide (Cool Springs Press).
Good luck.

We planted the EZ seed grass seed around April 15. We have a pretty good yard of grass but several weeds coming up. Some big and thick, some small and fine but when is it safe to spray a weed killer and which kind of weed killer?

Newly seeded lawns should be allowed to establish before applying weed killers; if you have mowed the new grass at least once and when the temperatures are cooler (70 to 80 degrees F. ), you can safely apply a weed control to the lawn. Be sure to select a weed control labeled for lawns and READ AND FOLLOW THE LABEL directions carefully. You lawn should be thoroughly watered the day before you apply the weed control. In the meantime, when the soil is moist, you can get rid of the weeds by digging or hand pulling. Though this method is tedious, it is "organic" and reduces the use of pesticides in the landscape.
For more details on lawn care in our area, please refer to my newest book: ROCKY MOUNTAIN Getting Started Garden Guide (Cool Springs Press).

Would a thin layer of pine saw dust hurt St. Augustine grass?

It depends on what you mean by "thin layer". Fresh sawdust from pines have turpentines in them and these can harm the turf by burning the leaf blades. It is better to compost the pine sawdust for several months before applying to the garden or lawn. Compost sawdust with other green matter including grass clippings, leaves, and other vegetation.

Can I use my leftover turf food around trees and flowers?

If the leftover fertilizer is still granulated and hasn't become wet and caked, it can be safely used around trees and flowers. Just remember that this is turf food and higher in nitrogen so it must be applied in smaller portions. I have used it lightly around shrubs, trees, and perennials with good results. Once scattered around the plants you desire, lightly cultivate into the soil and water in thoroughly. Again, a little turf food will go a long way. Don't overdo or over apply.

Earwigs ate almost all my vinca leaves but ignored my dianthus. Any suggestions on how to get rid of earwigs and also, will earwigs "over winter" in my soil and return to same area next season? Thanks very much, Nancy

Earwigs are active in late summer and early fall getting ready to store up food for overwintering. I would suggest to set out earwig traps in the evening hours and dispose of the critters the next morning. You can find out how to make homemade traps in the ROCKY MOUNTAIN Month-by-Month Garden Guide (Cool Springs Press). These pests will overwinter in the mulch and other areas, so you want to get rid of as many as possible now. Good luck.

Is lime advisable for established lawns in Aurora, CO?

Lime is not advisable for lawns in our area at all. Lime is very alkaline, which we already have plenty of in our soil. A combination of sulfur and iron would be a much better way to go and would improve your soil dramatically.

Should turf be moist or dry when richlawn will be applied?

As far as achieving great results with the turf food, dry or wet doesn't matter. It is easier to do the application while the grass is dry, and then water after do activate the nutrients. Thanks for your question.

huge clumps of fungi growing round dead hawthorn tree worried about my dog when on walk

This is very normal as many types of fungi including mushrooms will appear around a decomposing tree stump. Since we're not certain of their toxicity, please keep the dog away from them so your pet won't eat them. Pets that ingest toadstools and mushrooms can become ill and in most cases will vomit to expel them from their body. Just to be safe, keep your pet on a short leash to avoid the fungi.

Can we apply your Pro Rich winterizer with new grass seed?

Yes, it is perfectly safe to apply Pro-Rich Winterizer at the same time as your grass seed. Just be sure to cover the seed lightly, and keep it moist until germination (7-10 days normally.)

I bought a bag of richlawn ez green grass seed. Its a green bag nothing fancy. But now i keep seeing another bag with the same words almost but the bag looks different. What is the difference in the 2 bags of seed?

We have 2 sizes of Richlawn EZ Green grass seed. One is a 3lb bag, and the other is a 20lb bag. Both are sold at Colorado Home Depot stores.
Thanks for your note.

Should I water in Richlawn Iron Rich after applying to my lawn? What is best practice for positive results?

Yes, you should water Iron-Rich after application. Water is the activating agent that breaks down the fertilizer so the nutrients can be absorbed by the roots of the grass or whatever plants it's being used on.

Can I use Richlawn Turf Food, 10-2-5 plus iron to fertilize hedge bushes?

Although it was formulated for lawns, Richlawn Turf Food is a good general-purpose fertilizer and can be used on many types of plants including those used in hedges.
Thanks for your note.

Can I use Iron Rich and Richlawn Turf Food together? Specifically, I just spread Iron Rich on my lawn (6 days ago), and now wondering if I should lay Turf Food down now too?

Richlawn Iron-Rich and Richlawn Turf Food both contain iron. An application of Iron-Rich between fertilizer treatments will keep your lawn a deep green all summer but applying them together is not necessary.

Will my lawn benefit from applying Revive each time I apply Pro Rich, Iron Rich and Winterizer and if so would you recommend the liquid Revive or the granule? Thanks, Jack

I would recommend applying the Revive Granules at the same time you fertilize, and water them in together. They work very well together and are both made in Colorado for our soils.
Thanks for your note.

i live in bradenton florida..where can i buy 4 bags of iron rich

Unfortunately, we do not any dealers outside of the Colorado area due to limited raw materials. Hopefully, in the future we will be able to serve you, but not at the moment.
Thanks for your note.

What retailer near Boulder or Louisville, CO, carry "Nature's Yield compost"? Also, is Nature'e Yield sometimes marketed as just "Nature"? Thanks, Bill

The closest retailer for Nature's Yield soils would be The Flower Bin in Longmont. They always maintain a large inventory of both products. It is always marketed as Nature's Yield.
Thanks for your note.

Is the Richlawn Organic 100 5-3-2 fertilizer safe for Bermuda? Or do you have a better fertilizer for that type of lawn?

Richlawn Organic 100 is perfectly safe to use on virtually all types of plants, including any type of grass.
Thanks for your note.

I only use your product!!! Today I purchased the normal fertilizer and I also purchased the IRON Rich product - can i put both on the lawn at the same time or do i need to stagger them every 6 weeks. Please provide guidance so i do not damage my lawn - Glenn in Monument, CO

Hi Glenn-
There is no real benefit to using both at the same time, because each one contains iron. Iron-Rich is a good supplement that is best used in-between regular fertilizer applications.
Thanks for your note!



I use the iron- rich and pro rich products every year. I normally apply the iron rich first and wait 2 weeks before applying the pro rich. In anticipation of this possible storm here in Colorado next week, can I put the iron-rich and pro rich down at the same time without any issues?

It is not necessary to use both products at the same time, because they both contain iron. It is ideal to use Iron-Rich in between regular fertilizer applications to maintain a deep green color.

Thanks for your note!

I want to know the ingredients on all your fertilizers and only found it on one. It’s hard to find a good organic based fertilizer for the lawn that is reasonably priced. Where can I find that information? I do not want to use one that contains blood. Thank you, Layne

Hi Layne:
All fertilizer bags have the ingredients on the back panel. If you have a smaller lawn, I would recommend the Richlawn Turf Food, and for a larger lawn our Pro-Rich Turf Food is ideal.
Richlawn Turf Food is sold at Lowe's and Home Depot and Pro-Rich is available at garden centers and ACE Hardware stores.
Thanks for your note.


1. I have a Scotts Rotatory Spreader with an edge guard. I use the RICHLAWN 5-3-2 ORGANIC 100. What should be my spreader settings for 20 lbs./1000 ft? 2. Do you still make the Richlawn Iron-Rich fertilizer? I am in Colorado Springs and I cannot find it in the usual stores.

A good spreader setting on your Scotts' rotary would be 50% of the maximum.
Iron-Rich is available at all Home Depot and Lowe's stores in Colorado Springs. they should all have it in stock.
Thanks for your note.

approximately how much does this bag weigh? Planning to carry it home on foot from McGuckins, but need to plan how I will do that. Thanks.

Not sure which bag you are referring to, but most are around 40lbs whether it is a fertilizer or soil product.
Thanks for your note.

Is there a bag that covers more that the 1,000sq ft from the 3lb bag? I need way more than that.

We also have a 20lb bag of our EZ Green seed, which is sold at Home Depot stores in Colorado.

Thanks for your note.

Regarding Iron-Rich, the tips say to “Water thoroughly after application to begin activating nutrients”. What does water thoroughly mean? 10 minutes, 15? 20?

A normal watering of 10-15 minutes is enough time to begin breaking down Iron-Rich or any of our fertilizers. Be sure to sweep or blow any particles from concrete before watering.

Thanks for your note.

What is the best product to use with rich lawn turf food to kill weeds in the lawn? I want to avoid grass getting burned.

The best products for lawn weed control are spot spray herbicides where you target the weed, and not apply it to the entire lawn. There are several brands that make effective selective herbicides.

Thanks for your note.

Hello, I used Richlawn grass fertilizer for the first time. I watered throughly as suggested. Your bag did not say how long to keep pets off the lawn after applying the fertilizer. Please respond.

It is only necessary to keep pets off the lawn until it is dry, just as a precaution so it doesn't get tracked in the house.

Thanks for your note.

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