Spring Garden Tips
Starting Non Hardy Bulbs Indoors

Indoor Start for Earlier Impact

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You can start your summer garden months before the traditional planting date. Start cannas, dahlias or other non-hardy bulbs indoors for bigger transplants and earlier bloom in the garden.

Retrieve the rhizomes, tubers or corms you may have stored for winter or purchase them from your favorite garden center or catalog.

This is also the perfect time to divide large clumps that grew and multiplied last season. Be sure to leave several growing points with each division.

Next fill a flat, or pot with a well-drained potting mix. Lay the rhizomes of cannas and tuberous roots of dahlias on their side. Corms and tuberous stems are set flat with the root plate facing down.

Once you’re done planting, move the transplants to a warm sunny location and water thoroughly as needed, Fertilize once the leaves appear and be sure to harden off the plants before moving them outdoors.

A bit more information: Wait for the soil to warm to plant gladiolus corms directly outdoors in the garden. Plant large gladiolus corms 4 to 6 inches deep and smaller ones 3 inches deep and 6 inches apart. Most glads bloom in 8 to 10 weeks after planting. Extend the bloom time throughout the summer by making successive plantings at 2 week intervals. Stop planting about 12 weeks before the average date of the first fall frost.

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