Flowers, Raised Beds, Soil Guide

Raised beds aren't just for vegetables they're a wonderful way to grow cut flowers and flowering borders too, giving you full control over drainage and soil quality right from the start. If you're new to flower gardening, raised beds take a lot of the guesswork out of it.

o Choose a level, sunny spot for your be most flowering annuals and perennials need at least 6 hours of direct sun a day to bloom their best, though some varieties do fine in partial shade, so check your plant tag if you're unsure.

o Keep your bed no wider than 4 feet. This lets you reach the middle from either side without stepping into the bed, which keeps the soil loose and avoids compacting it.

o Build your frame from rot-resistant, untreated lumber like cedar or hemlock, and aim for a depth of at least 8-12 inches to give roots and bulbs room to grow.

o Start with a layer of cardboard or a few sheets of newspaper right on the ground at the bottom of your bed. This smothers any grass or weeds underneath before they get a chance to grow up into your fresh soil.

o Fill the bottom half of your bed with logs, sticks, green waste, and compost. As these materials break down over time, they act like a sponge holding onto moisture and slowly feeding your soil for years to come. Fill the top half with Castine Blend Raised Bed Mix, then rake it out so it's evenly distributed. Your bed should be filled all the way to the top.

o If natural materials aren't available, you can alternatively mix Castine Blend with our Topsoil and a compost of your choice.

o For shorter raised beds (1-2 feet in height), using just Castine Blend Raised Bed Mix will do no need to add anything else.

o Once the bed is filled, plant your bulbs or seeds as directed on the package. As a general rule of thumb, bulbs should be planted about two to three times as deep as the bulb itself is tall.

o If you're growing taller or top-heavy flowers dahlias, zinnias, and sunflowers are common culprits consider staking them or adding simple mesh support early on, so wind and heavy blooms don't snap the stems later in the season.

o Water regularly. Raised beds drain well, which is great for root health, but it also means they dry out faster than an in-ground garden so check in more often than you might expect. A simple test: stick a finger about two inches into the soil, and if it feels dry, it's time to water.

o Check on your plants regularly to monitor soil moisture and scout for early signs of pests or disease. Giving your plants a little breathing room and good airflow goes a long way toward preventing issues like powdery mildew.

o Deadhead spent blooms regularly snip them off just above a leaf node to encourage the plant to keep producing new flowers instead of going to seed.

o During the growing season, feed your plants with our Fertilizer for Roses & Flowers every 4-5 weeks.

 

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