How Much Alfalfa Seed Per Acre
Hey there, farmer friend! You know what's green, grows tall, and makes cows moo with joy? That's right, alfalfa! But you wanna know what's not so fun? Figuring out how much of that magical seed to plant per acre. Don't worry, I've got your back. Let's dive in, shall we?
First Things First: Variety Matters
Alfalfa, or 'lucerne' to our fancy friends across the pond, isn't one-size-fits-all. There are different varieties, like 'lucerne' (see, I'm learning too!), and each has its own seed size and planting rate. So, grab your magnifying glass and let's get up close and personal with those seeds.
Small Seeds, Big Impact
Most alfalfa seeds are tiny, like really tiny. We're talking about 10,000 to 20,000 seeds per ounce. That's like a tiny, green army ready to take over your field! But don't let their size fool you. These little guys pack a punch and can produce a lush, green stand that'll make your neighbors green with envy (pun intended).
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Now, Let's Talk Numbers
Alright, let's get down to business. The general rule of thumb is to plant about 15-20 pounds of alfalfa seed per acre. But remember, that's just a starting point. It can vary depending on your soil, climate, and the specific variety you're planting.
For example, if you're planting a variety with smaller seeds, you might need to up your game and plant more. On the other hand, if you're blessed with rich, fertile soil and a climate that's just right (like Goldilocks' porridge), you might be able to get away with planting less.
But Wait, There's More!
Here's a little secret: planting rate isn't just about the seed. It's also about the seeding method. If you're using a drill seeder, you might need to plant more seeds to ensure even coverage. But if you're broadcasting by hand (you hero, you), you might need to plant less.
Confused yet? Don't be! The key is to find that sweet spot where you're not wasting seed (and money) but also not skimping on coverage. It's like Goldilocks again - not too much, not too little, but just right.
Let's Get Technical
Alright, let's geek out for a second. If you're into the nitty-gritty, you might want to know that the ideal planting rate is often expressed in terms of pure live seed (PLS). This is the number of viable seeds per pound, adjusted for germination and purity.

For alfalfa, the target PLS is usually around 180,000 to 220,000 seeds per pound. So, if you're planting 15-20 pounds of seed per acre, you're looking at around 2.7 to 4.4 million seeds per acre. That's a whole lotta seeds!
But What About Depth?
You knew I wasn't gonna leave you hanging, right? Planting depth is just as important as planting rate. Alfalfa seeds need light to germinate, so you don't want to plant them too deep. Aim for about 1/4 to 1/2 inch deep. Any deeper, and your seeds might as well be on a tropical vacation - they'll never see the light of day!
Don't Forget to Rotate
Alright, we've talked a lot about planting, but what about after you've harvested your lush, green alfalfa? Well, it's time to rotate your crops, my friend. Alfalfa is a legume, which means it fixes nitrogen in the soil. But it also depletes certain nutrients, like potassium and phosphorus.
So, after a few years of alfalfa, it's a good idea to plant a cash crop that can make the most of those nutrients. Think corn, soybeans, or wheat. Your soil (and your wallet) will thank you!
You've Got This!
Phew, that was a lot of info! But don't worry, you've totally got this. Just remember: variety matters, find that sweet spot with your planting rate, and don't forget to rotate your crops. And hey, if all else fails, just channel your inner Goldilocks and go for 'just right'.
Now, go forth and plant some alfalfa! Your cows (and your soil) are counting on you. Happy farming!
