Growing strong since 1978

Planning / FAQ

Planning Questions

What you need to know before you call us.
You may know exactly what you want, but if you need some guidance  to make an informed decision, we can help.  We will best be able to help steer you in the right direction if you can provide us with the following information:
  1. Dryland or irrigated?
  2. What is the approximate altitude?
  3. Drilled or broadcast seed application?
  4. Area to be planted? (# of sq. ft. or acres)
  5. Special considerations? (slope, special soils etc.)
  6. Ground preparation?
  7. PLS # or Bulk?

PLS stands for Pure Live Seed. In any one bulk pound of seed there may be some inert material, other crop seed, etc. Also in that bulk pound there are some seeds that are not going to grow, perhaps they were harvested too soon or the growing conditions damaged seed as it was forming. So you have a germination rate below 100%. If you multiply the purity x the germination rate, it equals the percentage of Pure Live Seed (PLS). For seeding applications where getting the right amount of seed in the ground is critical—such as in reclamation reseeding, it is standard practice to purchase seed on a PLS basis guaranteeing the total amount of viable seed you expect for the job.  But for most applications, a bulk seeding rate the standard.

Seed remains viable for many years if you can store it in a cool dry place. So if your plans to plant the lawn are disrupted because you won the lottery—don’t worry. Store the seed for a year and start again.  Our tags give you a lot of information about the health of your seed including how much is pure and what the germination rate is.

Most seed companies purchase all their seed from other companies and from growers. They are removed from the growing experience even if they have highly qualified staff to help you with your needs. Southwest Seed is similar to a small handful of other seed companies in that we have our own farm where we grow approximately 40 different species of grasses and forbs (wildflowers) each year.

We purchase seed from other growers to make up the full complement of our seed offerings:  local genotypes, cover crops,  native vs. introduced,  dryland vs. irrigated, etc.

Different types of seed will take different times to grow, and can only grow when conditions are right. Most cool season grasses for instance will be able to germinate in the spring or early fall, as long as there is sufficient water and if the soil temperature averages between 45 and 65 degrees.  If those conditions are met, a species such as Annual rye might start to germinate in about a week, but other species such as Smooth brome will take 2-3 weeks to begin germination.  Generally, annual species will germinate pretty quickly and perennial species take longer to get going.  After germination, perennial plants can take up to 2 years to become fully established.

Growing plants and Mother Nature

Southwest Seed sells high quality seed documented by lab analysis. However, it takes good planting techniques, water, good soil and Mother Nature all working together to produce the lawn, pasture or wildflower stand of your dreams.

How to Buy

Contact us Direct

Looking to buy seed?  Just have questions? Contact us by phone, email or our come into our Dolores, CO location. We can also ship directly to you.  A minimum order of 1 lb applies, except for flower seeds.

Contact a Retailer

Dealers near you may carry Southwest Seed product. Check out our dealers list!