How can you bring in soil "richer?"? and how can you know if the soil you use is...
and how can you know if the soil you use is rich or not?
The best stuff to use is manure - chicken, horse, cow - it doesn't thing. Mix it into your soil well. It would be best to do it surrounded by the fall and consent to it ferment over the winter, but it'll still work well immediately if you want to get some.
PLANTING
The manure you purchase at garden centers is okay to use when you plant. For example, verbs your hole little deeper and mix a cup full with the soil, next continue your planting as usual.
AFTER PLANTS ARE ESTABLISHED ( WITHIN 2 WEEKS) we start using "Miracle Grow" fertilizer every 3-4 weeks. (Directions on the hindmost of the box)
THRU OUT THE GROWING SEASON: we gently mix our used coffee ground into the top inches of the soil; vegetable and flower gardens. The soil retains moisture longer and I hear it adds nitrogen to the soil.
FALL - Vegetable Garden: Every 3 years we use the actual manure and till (overturn) thru the soil contained by the fall. Every 5 years we work lime into the soil. Lime will usually burn out your plants if you attempt to incorporate it in the spring. Don't add on anything to our flower gardens in the fall over but we do allow the last leaves of the tip out season to form a natural blanket over the floral gardens.
We don't follow the "standard recommendations" that state that you own to rotate your crops and we don't send our soil out for trialling. Our fresh salad garden - tomatoes, variety of pepper plants, zucchini, cukes and onions are fine. We usually purchase brand new soil for our lettuce.
Answers: Add compost, you know you have rich soil if you find worms surrounded by the soil