Q&A for How to Grow Saguaro Cactus

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How do you take care of a cactus?

Mark Leahy
Plant Specialist
Mark Leahy is a Plant Specialist based in the San Francisco Bay Area. He is the Co-Owner of Bella Fiora, a custom design floral studio, and SF Plants, a plant shop and nursery. Mark specializes in floral artistry and indoor plants including floral arrangements, terrace planters, office plantscapes, and living walls. Mark and his business partner have been featured in Vogue, The Knot, Today’s Bride, Wedding Wire, Modern Luxury, San Francisco Bride Magazine, San Francisco Fall Antique Show, Black Bride, Best of the Bay Area A-List, and Borrowed & Blue.

Mark Leahy

Plant Specialist

Expert Answer

It needs sun, it likes to be watered thoroughly, but you leave the soil to dry out and dusty before you water it. If you keep up consistency with that, you will have a healthy cactus, the main thing is to water thoroughly and let the soil dry out totally in between watering schedules.

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Where can I buy the saguaro seeds?

Community Answer

You can buy them online from sights like Amazon.

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Question

How do I pot on the saguaro cacti seedlings?

Community Answer

Poke several small holes in the soil one inch apart, using a pencil. Make the holes about 1/8 inch deep. Place the saguaro seeds in the holes, and use cactus potting soil.

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Question

Does the cactus produce its own seeds?

Community Answer

The fruits produced by cacti after the flowers have been fertilized vary considerably. Many are fleshy, although some are dry. All contain a large number of seeds.

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Question

How long does it take a saguaro cactus to grow an arm?

Brad Pepiot

Community Answer

Typically it takes 75-100 years before the saguaro will grow its first arm, although some will never grow arms.

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Question

How do I repot a saguaro cactus if it is fairly tall?

B. E. Kissinger

Community Answer

This is hard to do since the roots grow radially and the overall diameter of the root reach is approximately double the plant height. The depth of the main roots can also be quite deep. Therefore, once the plant starts to get large, it is best to plant in the ground.

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Can I grow a saguaro cactus from a limb?

Community Answer

You can, but they take 75-100 years to grow one, and some never do. If you are lucky enough to have one, cut the arm off and let it heal. Then put it in a half sand and half peat mixture.

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Question

Can I grow a saguaro from a starter?

Community Answer

Yes. The only problem is they will cost more and only save a few years. I would suggest starting from seed since the babies have mini spines.

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How much does a potted seedling saguaro cost?

Community Answer

It will cost somewhere around $15.00 at a nursery.

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How long should it take a saguaro cactus to grow from a seed?

Community Answer

It can take up to 2 years for a saguaro cactus to grow .25” from seed. It can take 40 years to grow 2’ tall.

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