It is a good technique to operate in some compost before planting each spring. Suppose you have refrained from doing this, and also your blossoms have currently been grown, or you are expanding perennials, bulbs, or hedges. In that case, you can cover the outfit with a little garden compost, maybe an inch approximately, instead.
Unless there is a need to increase the soil volume to improve drainage, it is better to include a small amount of a rich soil change such as compost than having a great deal of best soil for elevated garden beds annually. Topsoil is vastly overrated, and so is yard soil for that issue.
For the last couple of years, my store has had the uncertain difference of selling more bagged dust than any store in The USA and Houston. I do not recognize why everybody is so focused on adding dirt to their garden every year. More than once, I have had a client say something about having to dispose of “old soul” so that they can change it with even more bagged garden soil. This is pointless as well, as I cannot even approximate the variety of times that I have had to talk to individuals on the benefits of boosting their existing soil rather than getting rid of and changing existing soil. If the ground had been infected or polluted, it would make good sense to throw it away and change it effectively. However, that is not the case. I assume that education is the key here, but it feels like an uphill battle.
My raised beds soil is chock packed with bulbs, perennials, hedges, and the soil, is crispy and alive with earthworms, and based on the healthiness of my plants, great deals of beneficial microorganisms. I include a charitable amount of composted mulch yearly, and also around once every five years, I scuff back the leading inch or so of mulch, split the perennials and get rid of the bulbs, that add a little compost, replant some of the light bulbs, and also include more compost. The dirt degree in this bed has boosted just a little over the past 12 years, and also it continues to be healthy. There is no demand to include extra dirt.
It simply struck me that the increased bed you describe may be the type that is elevated on legs to be a couple of feet above the ground. Also, the area supporting the growing media might be a foot deep or probably even shallower. If this holds, you should be using a top-quality natural potting mix rather than soil, and there may be a demand to eliminate and replace some of it each season. If you have already planted in such a raised bed, I would still include an inch or two of compost or new organic potting mix ahead and blend it in a little bit of it can be done without disturbing the roots. Or else, leave it on, yet not volcanoes against the plant.
If the blossoms appear to be growing fairly well, you can escape without adding anything this year, though doing this may enhance your demand for plant food. Don’t neglect it next year and also you must be fine.