Coryphantha
Coryphantharetusa

<h1>Coryphantha<br><i>Coryphantha</i><i>retusa</i></h1>

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                            <b>Family: Cactaceae</b>
                                    (kak-TAY-see-ee)<br>
                                                        <b>Genus: <i>Coryphantha</i></b>
                                    (kor-ry-FAN-tha)<br>
                                        
                            <b>Species: <i>retusa</i></b>
                                    (re-TOO-suh)<br>
                            
            
                        
                        
                        
                            <P><b>Synonym:<i>Coryphantha retusa var. retusa</i></b><br>
            
                            <P><b>Synonym:<i>Mammillaria cephalophora</i></b><br>
                        
                            <P><b>Synonym:<i>Echinocactus cephalophorus</i></b><br>
                        
                            <P><b>Synonym:<i>Melocactus mammillariaeformis</i></b><br>
                        
                            <P><b>Synonym:<i>Cactus cephalophorus</i></b><br>
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                                                        <P><B>Category</B></P>
                                                                        Cactus and Succulents<BR>
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                                                        <P><B>Water Requirements</B></P>
                                                                        Drought-tolerant; suitable for xeriscaping<BR>
                                                                                                Average Water Needs;  Water regularly; do not overwater<BR>
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                                                        <P><B>Sun Exposure</B></P>
                                                                        Full Sun<BR>
                                                                                                Sun to Partial Shade<BR>
                                                                                                Light Shade<BR>
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                                                        <P><B>Foliage</B></P>
                                                                        Unknown
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                                                        <P><B>Foliage Color</B></P>
                                                                        Unknown
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                                                        <P><B>Height</B></P>
                                                                        under 6 in. (15 cm)<BR>
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                                                        <P><B>Spacing</B></P>
                                                                        6-9 in. (15-22 cm)<BR>
                                                                                                9-12 in. (22-30 cm)<BR>
                                                                                                12-15 in. (30-38 cm)<BR>
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                                                        <P><B>Hardiness</B></P>
                                                                        USDA Zone 9b: to -3.8 °C (25 °F)<BR>
                                                                                                USDA Zone 10a: to -1.1 °C (30 °F)<BR>
                                                                                                USDA Zone 10b: to 1.7 °C (35 °F)<BR>
                                                                                                USDA Zone 11: above 4.5 °C (40 °F)<BR>
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                                                                                            <P><B>Where to Grow</B></P>
                                                                        Can be grown as an annual<BR>
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                                                                                                    <P><B>Danger</B></P>
                                                                        Plant has spines or sharp edges; use extreme caution when handling<BR>
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                                                                                                    <P><B>Bloom Color</B></P>
                                                                        Orange <BR>
                                                                                                Red-Orange<BR>
                                                                                                Pale Yellow<BR>
                                                                                                Bright Yellow<BR>
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                                                                                                    <P><B>Bloom Characteristics</B></P>
                                                                        Unknown
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                                                                                                    <P><B>Bloom Size</B></P>
                                                                        Unknown
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                                                                                                    <P><B>Bloom Time</B></P>
                                                                        Late Summer/Early Fall<BR>
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                                                                                                    <P><B>Other details</B></P>
                                                                        Unknown
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                                                                                                    <P><B>Soil pH requirements</B></P>
                                                                        6.1 to 6.5 (mildly acidic)<BR>
                                                                                                6.6 to 7.5 (neutral)<BR>
                                                                                                7.6 to 7.8 (mildly alkaline)<BR>
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                                                                                                    <P><B>Patent Information</B></P>
                                                                        Non-patented<BR>
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                                                                                                    <P><B>Propagation Methods</B></P>
                                                                        From woody stem cuttings<BR>
                                                                                                Allow cut surface to callous over before planting<BR>
                                                                                                From seed; direct sow after last frost<BR>
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                                                                                                    <P><B>Seed Collecting</B></P>
                                                                        Allow unblemished fruit to ripen; clean and dry seeds<BR>
                                                                                                Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds<BR>
                                                                                                Properly cleaned, seed can be successfully stored<BR>
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