How much rain is enough and more gardening tips

Linn County Master Gardener Claire Smith describes how much water is enough  (obviously, many parts of Iowa have had too much this week) and other gardening hints:

 

We’re so excited:  my favorite daughter’s garden is growing by leaps and bounds.  We had no idea of the quality of soil in the area, but luckily she unknowingly over seeded so we can do some thinning.  Her husband is excited to be able to walk out and pluck a ripe tomato.  Can you imagine the kids learning to hull peas?

So how is your garden growing? 

Have you noted your guests—your birds and butterfly buddies?  Adding bird and butterfly houses and water may encourage them to stay longer.

Keep planting. Try a new variety.   “Mudding” in plants is not a great idea, but there are certainly a variety of perennials still available when the ground dries out a little. 

Due to the overly wet conditions now, it’s a good idea to check your plants for mold and mildew.    Remove any leaves with blotches or that are discolored.  Use an insecticide soap to control insects.  Wet conditions do make weeding easier. 

Perennials generally do not need extra fertilizer.  The soil usually provides adequate nutrients.  Watch your plants, though and if they need a boost, go ahead with a liquid fertilizer. 

Perennials require one inch of water each week.  New plantings will request water several times each week.  It is better to water thoroughly less often.   Young new trees should be checked routinely and watered thoroughly as needed.  Remember clay soils retain water:  sandy soils do not. 

Finish pruning spring-flowering shrubs this month.  Prune so that the top of the hedge is narrower than the bottom to allow light to reach all parts of the shrub. 

Deadhead annuals as soon as the flowers start to fade to encourage new growth.

               

And, remember to plan a fun, educational and inexpensive ($10 for the entire family!) day on Saturday, June 14,  from 10 a.m. to 3 p.m. at the Linn County Master Gardeners’ First Annual Garden Walk.  Tickets are available at each location.  For more information, see the last two weeks’ blogs or call the Horticulture Hotline at 319-447-0647. 

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