That Garden Guy Radio Show, March 30th 2025

That Garden Guy talks about Spring, Cherry Trees, Wild Onions and weeds, soil tests, waiting for the forsythia blooms, pansies, cool weather vegetables, and more!

Ten Tips for the April Gardener:

Prune lavender to 1/3 of its height once new growth appears.
Prune old, leggy growth from heather (which flowers on new growth in late summer) but prune heath (which sets its flower buds in late spring) just enough to shape it in the early spring.
Pull back mulch from perennials to allow the soil to warm up but be prepared to temporarily recover them if heavy frosts are predicted.
Start dahlia tubers in pots indoors in a cool spot. Pinch back tips when they reach 6” and transplant outdoors when the ground temperature reaches 60°.
Get the jump on weeds in garden beds by pulling out any that overwinter and applying mulch.
For an instant spring show, fill containers with purchased forced spring bulbs from supermarkets and garden centers.
Freezing temperatures don’t harm pansies, but if they have been grown in a greenhouse they should be gradually exposed to outdoor temperatures before planting.
Divide overcrowded summer or fall blooming perennials.
Hardy water lilies may be planted in pools in spring but wait until the water reaches 70° for tropical water lilies.
Place peony supports.
Cut back Rose of Sharon to shape and eliminate volunteer plants.

That Garden Guy

Prune lavender to 1/3 of its height once new growth appears.

Prune old, leggy growth from heather (which flowers on new growth in late summer) but prune heath (which sets its flower buds in late spring) just enough to shape it in the early spring.

Pull back mulch from perennials to allow the soil to warm up but be prepared to temporarily recover them if heavy frosts are predicted.

Start dahlia tubers in pots indoors in a cool spot. Pinch back tips when they reach 6” and transplant outdoors when the ground temperature reaches 60°.

Get the jump on weeds in garden beds by pulling out any that overwinter and applying mulch.

For an instant spring show, fill containers with purchased forced spring bulbs from supermarkets and garden centers.

Freezing temperatures don’t harm pansies, but if they have been grown in a greenhouse they should be gradually exposed to outdoor temperatures before planting.

Divide overcrowded summer or fall blooming perennials.

Hardy water lilies may be planted in pools in spring but wait until the water reaches 70° for tropical water lilies.

Place peony supports.

Cut back Rose of Sharon to shape and eliminate volunteer plants.

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Prune lavender to 1/3 of its height once new growth appears.

Prune old, leggy growth from heather (which flowers on new growth in late summer) but prune heath (which sets its flower buds in late spring) just enough to shape it in the early spring.

Pull back mulch from perennials to allow the soil to warm up but be prepared to temporarily recover them if heavy frosts are predicted.

Start dahlia tubers in pots indoors in a cool spot. Pinch back tips when they reach 6” and transplant outdoors when the ground temperature reaches 60°.

Get the jump on weeds in garden beds by pulling out any that overwinter and applying mulch.

For an instant spring show, fill containers with purchased forced spring bulbs from supermarkets and garden centers.

Freezing temperatures don’t harm pansies, but if they have been grown in a greenhouse they should be gradually exposed to outdoor temperatures before planting.

Divide overcrowded summer or fall blooming perennials.

Hardy water lilies may be planted in pools in spring but wait until the water reaches 70° for tropical water lilies.

Place peony supports.

Cut back Rose of Sharon to shape and eliminate volunteer plants.

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